1201 lines
		
	
	
		
			33 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
		
		
			
		
	
	
			1201 lines
		
	
	
		
			33 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
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								--disable_warnings
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								DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
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								--enable_warnings
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								CREATE TABLE t0 (a int, b int, c int);
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								CREATE TABLE t1 (a int, b int, c int);
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								CREATE TABLE t2 (a int, b int, c int);
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								CREATE TABLE t3 (a int, b int, c int);
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								CREATE TABLE t4 (a int, b int, c int);
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								CREATE TABLE t5 (a int, b int, c int);
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								CREATE TABLE t6 (a int, b int, c int);
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								CREATE TABLE t7 (a int, b int, c int);
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								CREATE TABLE t8 (a int, b int, c int);
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								CREATE TABLE t9 (a int, b int, c int);
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								INSERT INTO t0 VALUES (1,1,0), (1,2,0), (2,2,0);
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								INSERT INTO t1 VALUES (1,3,0), (2,2,0), (3,2,0);
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								INSERT INTO t2 VALUES (3,3,0), (4,2,0), (5,3,0);
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								INSERT INTO t3 VALUES (1,2,0), (2,2,0);
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								INSERT INTO t4 VALUES (3,2,0), (4,2,0);
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								INSERT INTO t5 VALUES (3,1,0), (2,2,0), (3,3,0);
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								INSERT INTO t6 VALUES (3,2,0), (6,2,0), (6,1,0);
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								INSERT INTO t7 VALUES (1,1,0), (2,2,0);
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								INSERT INTO t8 VALUES (0,2,0), (1,2,0);
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								INSERT INTO t9 VALUES (1,1,0), (1,2,0), (3,3,0);
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								SELECT t2.a,t2.b
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								  FROM t2;
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								SELECT t3.a,t3.b
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								  FROM t3;
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								SELECT t4.a,t4.b
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								  FROM t4;
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								SELECT t3.a,t3.b,t4.a,t4.b
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								  FROM t3,t4;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t2.b=t4.b;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t3.a=1 AND t2.b=t4.b;
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								EXPLAIN EXTENDED
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t2.b=t4.b
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								    WHERE t3.a=1 OR t3.c IS NULL;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t2.b=t4.b
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								    WHERE t3.a=1 OR t3.c IS NULL;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t2.b=t4.b
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								    WHERE t3.a>1 OR t3.c IS NULL;
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								SELECT t5.a,t5.b
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								  FROM t5;
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								SELECT t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t3,t4,t5;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4, t5)
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								       ON t2.b=t4.b;
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								EXPLAIN EXTENDED
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4, t5)
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								       ON t2.b=t4.b
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								    WHERE t3.a>1 OR t3.c IS NULL;
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4, t5)
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								       ON t2.b=t4.b
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								    WHERE t3.a>1 OR t3.c IS NULL;
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								EXPLAIN EXTENDED
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4, t5)
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								       ON t2.b=t4.b
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								    WHERE (t3.a>1 OR t3.c IS NULL) AND 
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								          (t5.a<3 OR t5.c IS NULL);
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4, t5)
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								       ON t2.b=t4.b
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								    WHERE (t3.a>1 OR t3.c IS NULL) AND 
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								          (t5.a<3 OR t5.c IS NULL);
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								SELECT t6.a,t6.b
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								  FROM t6;
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								SELECT t7.a,t7.b
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								  FROM t7;
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								SELECT t6.a,t6.b,t7.a,t7.b
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								  FROM t6,t7;
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								SELECT t8.a,t8.b
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								  FROM t8;
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								 | 
							
								
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								 | 
							
								EXPLAIN EXTENDED
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								SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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								  FROM (t6, t7)
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								       LEFT JOIN 
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								       t8
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								       ON t7.b=t8.b AND t6.b < 10;
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								SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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								  FROM (t6, t7)
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								       LEFT JOIN 
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								       t8
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								       ON t7.b=t8.b AND t6.b < 10;
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								SELECT t5.a,t5.b
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								  FROM t5;
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								 | 
							
								
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								SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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								  FROM t5 
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								       LEFT JOIN 
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								       ( 
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								         (t6, t7)
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								         LEFT JOIN 
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								         t8
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								         ON t7.b=t8.b AND t6.b < 10
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								       )
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								       ON t6.b >= 2 AND t5.b=t7.b;
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								 | 
							
								
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								SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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								  FROM t5 
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								       LEFT JOIN 
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								       ( 
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								         (t6, t7)
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								         LEFT JOIN 
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								         t8
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								         ON t7.b=t8.b AND t6.b < 10
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								       )
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								       ON t6.b >= 2 AND t5.b=t7.b AND
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								          (t8.a < 1 OR t8.c IS NULL);
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								 | 
							
								
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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								 | 
							
								  FROM t2
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								       LEFT JOIN              
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								       (t3, t4)
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								       ON t3.a=1 AND t2.b=t4.b;
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								 | 
							
								
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								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
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								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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								  FROM t2
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								       LEFT JOIN              
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| 
								 | 
							
								       (t3, t4)
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								       ON t3.a=1 AND t2.b=t4.b,
							 | 
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								 | 
							
								       t5 
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								 | 
							
								       LEFT JOIN 
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| 
								 | 
							
								       ( 
							 | 
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								 | 
							
								         (t6, t7)
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								         LEFT JOIN 
							 | 
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| 
								 | 
							
								         t8
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								         ON t7.b=t8.b AND t6.b < 10
							 | 
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								       )
							 | 
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								       ON t6.b >= 2 AND t5.b=t7.b; 
							 | 
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| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
							 | 
						||
| 
								 | 
							
								  FROM t2
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| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       (t3, t4)
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								       t5 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN 
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         (t6, t7)
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         t8
							 | 
						||
| 
								 | 
							
								         ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON t6.b >= 2 AND t5.b=t7.b
							 | 
						||
| 
								 | 
							
								    WHERE t2.a > 3 AND
							 | 
						||
| 
								 | 
							
								          (t6.a < 6 OR t6.c IS NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b
							 | 
						||
| 
								 | 
							
								  FROM t1;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
							 | 
						||
| 
								 | 
							
								  FROM t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
							 | 
						||
| 
								 | 
							
								  FROM t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2)
							 | 
						||
| 
								 | 
							
								    WHERE (t2.a >= 4 OR t2.c IS NULL);
							 | 
						||
| 
								 | 
							
								   
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b
							 | 
						||
| 
								 | 
							
								  FROM t0;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2)
							 | 
						||
| 
								 | 
							
								    WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								          t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								          (t2.a >= 4 OR t2.c IS NULL); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2)
							 | 
						||
| 
								 | 
							
								    WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								          t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								          (t2.a >= 4 OR t2.c IS NULL); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t9;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b
							 | 
						||
| 
								 | 
							
								  FROM t1;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b
							 | 
						||
| 
								 | 
							
								  FROM t2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t2 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       t3
							 | 
						||
| 
								 | 
							
								       ON t2.b=t3.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t1, t2 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       t3
							 | 
						||
| 
								 | 
							
								       ON t2.b=t3.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t1, t3 
							 | 
						||
| 
								 | 
							
								       RIGHT JOIN              
							 | 
						||
| 
								 | 
							
								       t2
							 | 
						||
| 
								 | 
							
								       ON t2.b=t3.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t3,t4;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t2 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       (t3, t4)
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t1, t2 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       (t3, t4)
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t1, (t3, t4) 
							 | 
						||
| 
								 | 
							
								       RIGHT JOIN              
							 | 
						||
| 
								 | 
							
								       t2
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t1, (t3, t4)
							 | 
						||
| 
								 | 
							
								       RIGHT JOIN              
							 | 
						||
| 
								 | 
							
								       t2
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM t1, (t3, t4)
							 | 
						||
| 
								 | 
							
								       RIGHT JOIN
							 | 
						||
| 
								 | 
							
								       t2
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t2.b=t4.b
							 | 
						||
| 
								 | 
							
								    WHERE t1.a <= 2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_b ON t2(b);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM (t3,t4)
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       (t1,t2)
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
							 | 
						||
| 
								 | 
							
								  FROM (t3,t4)
							 | 
						||
| 
								 | 
							
								       LEFT JOIN              
							 | 
						||
| 
								 | 
							
								       (t1,t2)
							 | 
						||
| 
								 | 
							
								       ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_b ON t4(b);
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_b ON t5(b);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_b ON t8(b);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_b ON t1(b);
							 | 
						||
| 
								 | 
							
								CREATE INDEX idx_a ON t0(a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN EXTENDED
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
							 | 
						||
| 
								 | 
							
								       t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
							 | 
						||
| 
								 | 
							
								  FROM t0,t1
							 | 
						||
| 
								 | 
							
								       LEFT JOIN                
							 | 
						||
| 
								 | 
							
								       ( 
							 | 
						||
| 
								 | 
							
								         t2
							 | 
						||
| 
								 | 
							
								         LEFT JOIN              
							 | 
						||
| 
								 | 
							
								         (t3, t4)
							 | 
						||
| 
								 | 
							
								         ON t3.a=1 AND t2.b=t4.b,
							 | 
						||
| 
								 | 
							
								         t5 
							 | 
						||
| 
								 | 
							
								         LEFT JOIN 
							 | 
						||
| 
								 | 
							
								         ( 
							 | 
						||
| 
								 | 
							
								           (t6, t7)
							 | 
						||
| 
								 | 
							
								           LEFT JOIN 
							 | 
						||
| 
								 | 
							
								           t8
							 | 
						||
| 
								 | 
							
								           ON t7.b=t8.b AND t6.b < 10
							 | 
						||
| 
								 | 
							
								         )
							 | 
						||
| 
								 | 
							
								         ON t6.b >= 2 AND t5.b=t7.b 
							 | 
						||
| 
								 | 
							
								       )
							 | 
						||
| 
								 | 
							
								       ON (t3.b=2 OR t3.c IS NULL) AND (t6.b=2 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.b=t5.b OR t3.c IS NULL OR t6.c IS NULL or t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								          (t1.a != 2),
							 | 
						||
| 
								 | 
							
								       t9
							 | 
						||
| 
								 | 
							
								     WHERE t0.a=1 AND
							 | 
						||
| 
								 | 
							
								           t0.b=t1.b AND          
							 | 
						||
| 
								 | 
							
								           (t2.a >= 4 OR t2.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.a < 5 OR t3.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t3.b=t4.b OR t3.c IS NULL OR t4.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t5.a >=2 OR t5.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t6.a >=4 OR t6.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t7.a <= 2 OR t7.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.a < 1 OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t8.b=t9.b OR t8.c IS NULL) AND
							 | 
						||
| 
								 | 
							
								           (t9.a=1); 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b
							 | 
						||
| 
								 | 
							
								  FROM t2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t2 LEFT JOIN t3 ON t2.b=t3.b
							 | 
						||
| 
								 | 
							
								    WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t2 LEFT JOIN (t3) ON t2.b=t3.b
							 | 
						||
| 
								 | 
							
								    WHERE t2.a = 4 OR (t2.a > 4 AND t3.a IS NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								ALTER TABLE t3
							 | 
						||
| 
								 | 
							
								  CHANGE COLUMN a a1 int,
							 | 
						||
| 
								 | 
							
								  CHANGE COLUMN c c1 int; 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a1,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t2 LEFT JOIN t3 ON t2.b=t3.b
							 | 
						||
| 
								 | 
							
								    WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t2.a,t2.b,t3.a1,t3.b
							 | 
						||
| 
								 | 
							
								  FROM t2 NATURAL LEFT JOIN t3
							 | 
						||
| 
								 | 
							
								    WHERE t2.a = 4 OR (t2.a > 4 AND t3.a1 IS NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (a int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (a int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (a int);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (1);
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (2);
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (2);
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (2);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#check proper syntax for nested outer joins
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.a=t3.a) ON t1.a=t3.a;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#must be equivalent to:
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#check that everything is al right when all tables contain not more than 1 row
							 | 
						||
| 
								 | 
							
								#(bug #4922)
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DELETE FROM t1 WHERE a=2;
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
							 | 
						||
| 
								 | 
							
								DELETE FROM t2;
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON t2.a=t3.a ON t1.a=t3.a;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#on expression for a nested outer join does not depend on the outer table
							 | 
						||
| 
								 | 
							
								#bug #4976
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1(a int, key (a));                                              
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2(b int, key (b));                                               
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3(c int, key (c));                                               
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9),
							 | 
						||
| 
								 | 
							
								(10), (11), (12), (13), (14), (15), (16), (17), (18), (19);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (NULL), (0), (1), (2), (3), (4), (5), (6), (7), (8), (9),
							 | 
						||
| 
								 | 
							
								(10), (11), (12), (13), (14), (15), (16), (17), (18), (19);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (0), (1), (2), (3), (4), (5);
							 | 
						||
| 
								 | 
							
								 
							 | 
						||
| 
								 | 
							
								EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON c < 3 and b = c;
							 | 
						||
| 
								 | 
							
								EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
							 | 
						||
| 
								 | 
							
								SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DELETE FROM t3;
							 | 
						||
| 
								 | 
							
								EXPLAIN SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
							 | 
						||
| 
								 | 
							
								SELECT a, b, c FROM t1 LEFT JOIN (t2, t3) ON b < 3 and b = c;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Test for bug #11284: empty table in a nested left join
							 | 
						||
| 
								 | 
							
								# 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (c11 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (c21 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (c31 int);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (4), (5);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN t2 ON c11=c21;
							 | 
						||
| 
								 | 
							
								EXPLAIN SELECT * FROM t1 LEFT JOIN t2 ON c11=c21;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21;
							 | 
						||
| 
								 | 
							
								EXPLAIN SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON c21=c31) ON c11=c21;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Bug #12154: creation of temp table for a query with nested outer join
							 | 
						||
| 
								 | 
							
								# 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (goods int(12) NOT NULL, price varchar(128) NOT NULL);
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (23, 2340), (26, 9900);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (goods int(12), name varchar(50), shop char(2));
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (23, 'as300', 'fr'), (26, 'as600', 'fr');
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t3 (groupid int(12) NOT NULL, goodsid int(12) NOT NULL);
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (3,23), (6,26);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4 (groupid int(12));
							 | 
						||
| 
								 | 
							
								INSERT INTO t4 VALUES (1), (2), (3), (4), (5), (6);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM
							 | 
						||
| 
								 | 
							
								(SELECT DISTINCT gl.groupid, gp.price
							 | 
						||
| 
								 | 
							
								  FROM t4 gl 
							 | 
						||
| 
								 | 
							
								       LEFT JOIN
							 | 
						||
| 
								 | 
							
								       (t3 g INNER JOIN t2 p ON g.goodsid = p.goods 
							 | 
						||
| 
								 | 
							
								             INNER JOIN t1 gp ON p.goods = gp.goods)
							 | 
						||
| 
								 | 
							
								       ON gl.groupid = g.groupid and p.shop = 'fr') t;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE VIEW v1 AS
							 | 
						||
| 
								 | 
							
								SELECT g.groupid groupid, p.goods goods,  
							 | 
						||
| 
								 | 
							
								       p.name name, p.shop shop, 
							 | 
						||
| 
								 | 
							
								       gp.price price
							 | 
						||
| 
								 | 
							
								  FROM t3 g INNER JOIN t2 p ON g.goodsid = p.goods
							 | 
						||
| 
								 | 
							
								            INNER JOIN t1 gp on p.goods = gp.goods;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE VIEW v2 AS
							 | 
						||
| 
								 | 
							
								SELECT DISTINCT g.groupid, fr.price
							 | 
						||
| 
								 | 
							
								  FROM t4 g
							 | 
						||
| 
								 | 
							
								       LEFT JOIN
							 | 
						||
| 
								 | 
							
								       v1 fr on g.groupid = fr.groupid and fr.shop = 'fr';
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM v2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM 
							 | 
						||
| 
								 | 
							
								(SELECT DISTINCT g.groupid, fr.price
							 | 
						||
| 
								 | 
							
								  FROM t4 g
							 | 
						||
| 
								 | 
							
								       LEFT JOIN
							 | 
						||
| 
								 | 
							
								       v1 fr on g.groupid = fr.groupid and fr.shop = 'fr') t;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP VIEW v1,v2;
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3,t4;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Bug #13545: problem with NATURAL/USING joins.
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1(a int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2(b int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3(c int, d int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4(d int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t5(e int, f int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t6(f int);
							 | 
						||
| 
								 | 
							
								CREATE VIEW v1 AS 
							 | 
						||
| 
								 | 
							
								  SELECT e FROM t5 JOIN t6 ON t5.e=t6.f;
							 | 
						||
| 
								 | 
							
								CREATE VIEW v2 AS 
							 | 
						||
| 
								 | 
							
								  SELECT e FROM t5 NATURAL JOIN t6;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								--error 1054
							 | 
						||
| 
								 | 
							
								SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								SELECT t1.a FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4;
							 | 
						||
| 
								 | 
							
								--error 1054
							 | 
						||
| 
								 | 
							
								SELECT t1.x FROM t1 JOIN t2 ON a=b JOIN t3 ON a=c NATURAL JOIN t4;
							 | 
						||
| 
								 | 
							
								SELECT v1.e FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								--error 1054
							 | 
						||
| 
								 | 
							
								SELECT v1.x FROM v1 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								SELECT v2.e FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								--error 1054
							 | 
						||
| 
								 | 
							
								SELECT v2.x FROM v2 JOIN t2 ON e=b JOIN t3 ON e=c JOIN t4 USING(d);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP VIEW v1, v2;
							 | 
						||
| 
								 | 
							
								DROP TABLE t1, t2, t3, t4, t5, t6;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# BUG#13126 -test case from bug report
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								create table t1 (id1 int(11) not null); 
							 | 
						||
| 
								 | 
							
								insert into t1 values (1),(2);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t2 (id2 int(11) not null);
							 | 
						||
| 
								 | 
							
								insert into t2 values (1),(2),(3),(4);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t3 (id3 char(16) not null);
							 | 
						||
| 
								 | 
							
								insert into t3 values ('100');
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t4 (id2 int(11) not null, id3 char(16));
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t5 (id1 int(11) not null, key (id1));
							 | 
						||
| 
								 | 
							
								insert into t5 values (1),(2),(1);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create view v1 as
							 | 
						||
| 
								 | 
							
								  select t4.id3 from t4 join t2 on t4.id2 = t2.id2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								select t1.id1 from t1 inner join (t3 left join v1 on t3.id3 = v1.id3);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								drop view v1;
							 | 
						||
| 
								 | 
							
								drop table t1, t2, t3, t4, t5;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t0 (a int);
							 | 
						||
| 
								 | 
							
								insert into t0 values (0),(1),(2),(3);
							 | 
						||
| 
								 | 
							
								create table t1(a int);
							 | 
						||
| 
								 | 
							
								insert into t1 select A.a + 10*(B.a) from t0 A, t0 B;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t2 (a int, b int);
							 | 
						||
| 
								 | 
							
								insert into t2 values (1,1), (2,2), (3,3);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t3(a int, b int, filler char(200), key(a));
							 | 
						||
| 
								 | 
							
								insert into t3 select a,a,'filler' from t1;
							 | 
						||
| 
								 | 
							
								insert into t3 select a,a,'filler' from t1;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t4 like t3;
							 | 
						||
| 
								 | 
							
								insert into t4 select * from t3;
							 | 
						||
| 
								 | 
							
								insert into t4 select * from t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t5 like t4;
							 | 
						||
| 
								 | 
							
								insert into t5 select * from t4;
							 | 
						||
| 
								 | 
							
								insert into t5 select * from t4;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t6 like t5;
							 | 
						||
| 
								 | 
							
								insert into t6 select * from t5;
							 | 
						||
| 
								 | 
							
								insert into t6 select * from t5;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								create table t7 like t6;
							 | 
						||
| 
								 | 
							
								insert into t7 select * from t6;
							 | 
						||
| 
								 | 
							
								insert into t7 select * from t6;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--replace_column 9 X
							 | 
						||
| 
								 | 
							
								explain select * from t4 join 
							 | 
						||
| 
								 | 
							
								  t2 left join (t3 join t5 on t5.a=t3.b) on t3.a=t2.b where t4.a<=>t3.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--replace_column 9 X
							 | 
						||
| 
								 | 
							
								explain select * from (t4 join t6 on t6.a=t4.b) right join t3 on t4.a=t3.b
							 | 
						||
| 
								 | 
							
								  join t2 left join (t5 join t7 on t7.a=t5.b) on t5.a=t2.b where t3.a<=>t2.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--replace_column 9 X
							 | 
						||
| 
								 | 
							
								explain select * from t2 left join
							 | 
						||
| 
								 | 
							
								  (t3 left join (t4 join t6 on t6.a=t4.b) on t4.a=t3.b 
							 | 
						||
| 
								 | 
							
								   join t5 on t5.a=t3.b) on t3.a=t2.b;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								drop table t0, t1, t2, t3, t4, t5, t6, t7;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								# BUG#16393
							 | 
						||
| 
								 | 
							
								create table t1 (a int);
							 | 
						||
| 
								 | 
							
								insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
							 | 
						||
| 
								 | 
							
								create table t2 (a int, filler char(100), key(a));
							 | 
						||
| 
								 | 
							
								insert into t2 select A.a + 10*B.a, '' from t1 A, t1 B;
							 | 
						||
| 
								 | 
							
								create table t3 like t2;
							 | 
						||
| 
								 | 
							
								insert into t3 select * from t2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								explain select * from t1 left join 
							 | 
						||
| 
								 | 
							
								  (t2 left join t3 on (t2.a = t3.a)) 
							 | 
						||
| 
								 | 
							
								  on (t1.a = t2.a);
							 | 
						||
| 
								 | 
							
								drop table t1, t2, t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Bug #16260: single row table in the inner nest of an outer join  
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, type varchar(10));
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (pid int NOT NULL PRIMARY KEY, type varchar(10));
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (cid int NOT NULL PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								                 id int NOT NULL,
							 | 
						||
| 
								 | 
							
								                 pid int NOT NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (1, 'A'), (3, 'C');
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (1, 'A'), (3, 'C');
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (1, 1, 1), (3, 3, 3);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 p LEFT JOIN (t3 JOIN t1)
							 | 
						||
| 
								 | 
							
								                     ON (t1.id=t3.id AND t1.type='B' AND p.id=t3.id)
							 | 
						||
| 
								 | 
							
								                   LEFT JOIN t2 ON (t3.pid=t2.pid)
							 | 
						||
| 
								 | 
							
								  WHERE p.id=1;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE VIEW v1 AS
							 | 
						||
| 
								 | 
							
								  SELECT t3.* FROM t3 JOIN t1 ON t1.id=t3.id AND t1.type='B';
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 p LEFT JOIN v1 ON p.id=v1.id
							 | 
						||
| 
								 | 
							
								                   LEFT JOIN t2 ON v1.pid=t2.pid
							 | 
						||
| 
								 | 
							
								  WHERE p.id=1;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP VIEW v1;
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Test for bug #18279: crash when on conditions are moved out of a nested join
							 | 
						||
| 
								 | 
							
								#                      to the on conditions for the nest
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (id1 int PRIMARY KEY, id2 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (id1 int PRIMARY KEY, id2 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (id1 int PRIMARY KEY, id2 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4 (id1 int PRIMARY KEY, id2 int);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t5 (id1 int PRIMARY KEY, id2 int);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
							 | 
						||
| 
								 | 
							
								  FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
							 | 
						||
| 
								 | 
							
								       LEFT OUTER JOIN
							 | 
						||
| 
								 | 
							
								       (t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
							 | 
						||
| 
								 | 
							
								       ON t3.id2 IS NOT NULL
							 | 
						||
| 
								 | 
							
								    WHERE t1.id1=2;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								PREPARE stmt FROM
							 | 
						||
| 
								 | 
							
								"SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
							 | 
						||
| 
								 | 
							
								  FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
							 | 
						||
| 
								 | 
							
								       LEFT OUTER JOIN
							 | 
						||
| 
								 | 
							
								       (t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
							 | 
						||
| 
								 | 
							
								       ON t3.id2 IS NOT NULL
							 | 
						||
| 
								 | 
							
								    WHERE t1.id1=2";
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (1,1), (2,1), (3,2);
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (2,1), (3,2), (4,3);
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (1,1), (3,2), (2,NULL);
							 | 
						||
| 
								 | 
							
								INSERT INTO t4 VALUES (1,1), (2,1), (3,3);
							 | 
						||
| 
								 | 
							
								INSERT INTO t5 VALUES (1,1), (2,2), (3,3), (4,3);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt; 
							 | 
						||
| 
								 | 
							
								EXECUTE stmt;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.id1 AS id, t5.id1 AS ngroupbynsa
							 | 
						||
| 
								 | 
							
								  FROM t1 INNER JOIN t2 ON t2.id2 = t1.id1
							 | 
						||
| 
								 | 
							
								       LEFT OUTER JOIN
							 | 
						||
| 
								 | 
							
								       (t3 INNER JOIN t4 ON t4.id1 = t3.id2 INNER JOIN t5 ON t4.id2 = t5.id1)
							 | 
						||
| 
								 | 
							
								       ON t3.id2 IS NOT NULL
							 | 
						||
| 
								 | 
							
								    WHERE t1.id1=2; 
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3,t4,t5;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# Test for bug #24345: crash with nested left outer join when outer table is substituted
							 | 
						||
| 
								 | 
							
								#                      for a row that happens to have a null value for the join attribute.
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (
							 | 
						||
| 
								 | 
							
								  id int NOT NULL PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								  ct int DEFAULT NULL,
							 | 
						||
| 
								 | 
							
								  pc int DEFAULT NULL,
							 | 
						||
| 
								 | 
							
								  INDEX idx_ct (ct),
							 | 
						||
| 
								 | 
							
								  INDEX idx_pc (pc)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES  
							 | 
						||
| 
								 | 
							
								 (1,NULL,NULL),(2,NULL,NULL),(3,NULL,NULL),(4,NULL,NULL),(5,NULL,NULL);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (
							 | 
						||
| 
								 | 
							
								  id int NOT NULL PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								  sr int NOT NULL,
							 | 
						||
| 
								 | 
							
								  nm varchar(255) NOT NULL,
							 | 
						||
| 
								 | 
							
								  INDEX idx_sr (sr)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES
							 | 
						||
| 
								 | 
							
								  (2441905,4308,'LesAbymes'),(2441906,4308,'Anse-Bertrand');
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (
							 | 
						||
| 
								 | 
							
								  id int NOT NULL PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								  ct int NOT NULL,
							 | 
						||
| 
								 | 
							
								  ln int NOT NULL,
							 | 
						||
| 
								 | 
							
								  INDEX idx_ct (ct),
							 | 
						||
| 
								 | 
							
								  INDEX idx_ln (ln)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4 (
							 | 
						||
| 
								 | 
							
								  id int NOT NULL PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								  nm varchar(255) NOT NULL
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t4 VALUES (4308,'Guadeloupe'),(4309,'Martinique');
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.*
							 | 
						||
| 
								 | 
							
								  FROM t1 LEFT JOIN
							 | 
						||
| 
								 | 
							
								       (t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id
							 | 
						||
| 
								 | 
							
								    WHERE t1.id='5';
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT t1.*, t4.nm
							 | 
						||
| 
								 | 
							
								  FROM t1 LEFT JOIN
							 | 
						||
| 
								 | 
							
								      (t2 LEFT JOIN t3 ON t3.ct=t2.id AND t3.ln='5') ON t1.ct=t2.id
							 | 
						||
| 
								 | 
							
								          LEFT JOIN t4 ON t2.sr=t4.id
							 | 
						||
| 
								 | 
							
								    WHERE t1.id='5';
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3,t4;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# BUG#25575: ERROR 1052 (Column in from clause is ambiguous) with sub-join
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (a INT, b INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (a INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (a INT, c INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4 (a INT, c INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t5 (a INT, c INT);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT b FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a)
							 | 
						||
| 
								 | 
							
								LEFT JOIN t5 USING (a)) USING (a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--error ER_NON_UNIQ_ERROR
							 | 
						||
| 
								 | 
							
								SELECT c FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a)
							 | 
						||
| 
								 | 
							
								LEFT JOIN t5 USING (a)) USING (a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT b FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a)
							 | 
						||
| 
								 | 
							
								JOIN t5 USING (a)) USING (a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--error ER_NON_UNIQ_ERROR
							 | 
						||
| 
								 | 
							
								SELECT c FROM t1 JOIN (t2 JOIN t3 USING (a) JOIN t4 USING (a)
							 | 
						||
| 
								 | 
							
								JOIN t5 USING (a)) USING (a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3,t4,t5;
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (a INT, b INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (a INT, b INT);
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (a INT, b INT);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES (1,1);
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES (1,1);
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES (1,1);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--error ER_NON_UNIQ_ERROR
							 | 
						||
| 
								 | 
							
								SELECT * FROM t1 JOIN (t2 JOIN t3 USING (b)) USING (a);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								# BUG#29604: inner nest of left join interleaves with outer tables
							 | 
						||
| 
								 | 
							
								#
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t1 (
							 | 
						||
| 
								 | 
							
								  carrier char(2) default NULL,
							 | 
						||
| 
								 | 
							
								  id int NOT NULL auto_increment PRIMARY KEY
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t1 VALUES
							 | 
						||
| 
								 | 
							
								  ('CO',235371754),('CO',235376554),('CO',235376884),('CO',235377874),
							 | 
						||
| 
								 | 
							
								  ('CO',231060394),('CO',231059224),('CO',231059314),('CO',231060484),
							 | 
						||
| 
								 | 
							
								  ('CO',231060274),('CO',231060124),('CO',231060244),('CO',231058594),
							 | 
						||
| 
								 | 
							
								  ('CO',231058924),('CO',231058504),('CO',231059344),('CO',231060424),
							 | 
						||
| 
								 | 
							
								  ('CO',231059554),('CO',231060304),('CO',231059644),('CO',231059464),
							 | 
						||
| 
								 | 
							
								  ('CO',231059764),('CO',231058294),('CO',231058624),('CO',231058864),
							 | 
						||
| 
								 | 
							
								  ('CO',231059374),('CO',231059584),('CO',231059734),('CO',231059014),
							 | 
						||
| 
								 | 
							
								  ('CO',231059854),('CO',231059494),('CO',231059794),('CO',231058534),
							 | 
						||
| 
								 | 
							
								  ('CO',231058324),('CO',231058684),('CO',231059524),('CO',231059974);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t2 (
							 | 
						||
| 
								 | 
							
								  scan_date date default NULL,
							 | 
						||
| 
								 | 
							
								  package_id int default NULL,
							 | 
						||
| 
								 | 
							
								  INDEX scan_date(scan_date),
							 | 
						||
| 
								 | 
							
								  INDEX package_id(package_id)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t2 VALUES
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231062944),('2008-12-29',231065764),('2008-12-29',231066124),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231060094),('2008-12-29',231061054),('2008-12-29',231065644),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231064384),('2008-12-29',231064444),('2008-12-29',231073774),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231058594),('2008-12-29',231059374),('2008-12-29',231066004),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231068494),('2008-12-29',231070174),('2008-12-29',231071884),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231063274),('2008-12-29',231063754),('2008-12-29',231064144),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231069424),('2008-12-29',231073714),('2008-12-29',231058414),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231060994),('2008-12-29',231069154),('2008-12-29',231068614),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231071464),('2008-12-29',231074014),('2008-12-29',231059614),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231059074),('2008-12-29',231059464),('2008-12-29',231069094),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231067294),('2008-12-29',231070144),('2008-12-29',231073804),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231072634),('2008-12-29',231058294),('2008-12-29',231065344),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231066094),('2008-12-29',231069034),('2008-12-29',231058594),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231059854),('2008-12-29',231059884),('2008-12-29',231059914),
							 | 
						||
| 
								 | 
							
								  ('2008-12-29',231063664),('2008-12-29',231063814),('2008-12-29',231063904);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t3 (
							 | 
						||
| 
								 | 
							
								  package_id int default NULL,
							 | 
						||
| 
								 | 
							
								  INDEX package_id(package_id)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t3 VALUES
							 | 
						||
| 
								 | 
							
								  (231058294),(231058324),(231058354),(231058384),(231058414),(231058444),
							 | 
						||
| 
								 | 
							
								  (231058474),(231058504),(231058534),(231058564),(231058594),(231058624),
							 | 
						||
| 
								 | 
							
								  (231058684),(231058744),(231058804),(231058864),(231058924),(231058954),
							 | 
						||
| 
								 | 
							
								  (231059014),(231059074),(231059104),(231059134),(231059164),(231059194),
							 | 
						||
| 
								 | 
							
								  (231059224),(231059254),(231059284),(231059314),(231059344),(231059374),
							 | 
						||
| 
								 | 
							
								  (231059404),(231059434),(231059464),(231059494),(231059524),(231059554),
							 | 
						||
| 
								 | 
							
								  (231059584),(231059614),(231059644),(231059674),(231059704),(231059734),
							 | 
						||
| 
								 | 
							
								  (231059764),(231059794),(231059824),(231059854),(231059884),(231059914),
							 | 
						||
| 
								 | 
							
								  (231059944),(231059974),(231060004),(231060034),(231060064),(231060094),
							 | 
						||
| 
								 | 
							
								  (231060124),(231060154),(231060184),(231060214),(231060244),(231060274),
							 | 
						||
| 
								 | 
							
								  (231060304),(231060334),(231060364),(231060394),(231060424),(231060454),
							 | 
						||
| 
								 | 
							
								  (231060484),(231060514),(231060544),(231060574),(231060604),(231060634),
							 | 
						||
| 
								 | 
							
								  (231060664),(231060694),(231060724),(231060754),(231060784),(231060814),
							 | 
						||
| 
								 | 
							
								  (231060844),(231060874),(231060904),(231060934),(231060964),(231060994),
							 | 
						||
| 
								 | 
							
								  (231061024),(231061054),(231061084),(231061144),(231061174),(231061204),
							 | 
						||
| 
								 | 
							
								  (231061234),(231061294),(231061354),(231061384),(231061414),(231061474),
							 | 
						||
| 
								 | 
							
								  (231061564),(231061594),(231061624),(231061684),(231061714),(231061774),
							 | 
						||
| 
								 | 
							
								  (231061804),(231061894),(231061984),(231062074),(231062134),(231062224),
							 | 
						||
| 
								 | 
							
								  (231062254),(231062314),(231062374),(231062434),(231062494),(231062554),
							 | 
						||
| 
								 | 
							
								  (231062584),(231062614),(231062644),(231062704),(231062734),(231062794),
							 | 
						||
| 
								 | 
							
								  (231062854),(231062884),(231062944),(231063004),(231063034),(231063064),
							 | 
						||
| 
								 | 
							
								  (231063124),(231063154),(231063184),(231063214),(231063274),(231063334),
							 | 
						||
| 
								 | 
							
								  (231063394),(231063424),(231063454),(231063514),(231063574),(231063664);
							 | 
						||
| 
								 | 
							
								 
							 | 
						||
| 
								 | 
							
								CREATE TABLE t4 (
							 | 
						||
| 
								 | 
							
								  carrier char(2) NOT NULL default '' PRIMARY KEY,
							 | 
						||
| 
								 | 
							
								  id int(11) default NULL,
							 | 
						||
| 
								 | 
							
								  INDEX id(id)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t4 VALUES
							 | 
						||
| 
								 | 
							
								  ('99',6),('SK',456),('UA',486),('AI',1081),('OS',1111),('VS',1510);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								CREATE TABLE t5 (
							 | 
						||
| 
								 | 
							
								  carrier_id int default NULL,
							 | 
						||
| 
								 | 
							
								  INDEX carrier_id(carrier_id)
							 | 
						||
| 
								 | 
							
								);
							 | 
						||
| 
								 | 
							
								INSERT INTO t5 VALUES
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),
							 | 
						||
| 
								 | 
							
								  (6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(6),(456),(456),(456),
							 | 
						||
| 
								 | 
							
								  (456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),(456),
							 | 
						||
| 
								 | 
							
								  (456),(486),(1081),(1111),(1111),(1111),(1111),(1510);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								SELECT COUNT(*) 
							 | 
						||
| 
								 | 
							
								  FROM((t2 JOIN t1 ON t2.package_id = t1.id) 
							 | 
						||
| 
								 | 
							
								        JOIN t3 ON t3.package_id = t1.id);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								EXPLAIN
							 | 
						||
| 
								 | 
							
								SELECT COUNT(*) 
							 | 
						||
| 
								 | 
							
								  FROM ((t2 JOIN t1 ON t2.package_id = t1.id) 
							 | 
						||
| 
								 | 
							
								         JOIN t3 ON t3.package_id = t1.id)
							 | 
						||
| 
								 | 
							
								       LEFT JOIN 
							 | 
						||
| 
								 | 
							
								       (t5 JOIN t4 ON t5.carrier_id = t4.id)
							 | 
						||
| 
								 | 
							
								       ON t4.carrier = t1.carrier;
							 | 
						||
| 
								 | 
							
								SELECT COUNT(*) 
							 | 
						||
| 
								 | 
							
								  FROM ((t2 JOIN t1 ON t2.package_id = t1.id) 
							 | 
						||
| 
								 | 
							
								        JOIN t3 ON t3.package_id = t1.id)
							 | 
						||
| 
								 | 
							
								       LEFT JOIN 
							 | 
						||
| 
								 | 
							
								       (t5 JOIN t4 ON t5.carrier_id = t4.id)
							 | 
						||
| 
								 | 
							
								       ON t4.carrier = t1.carrier;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								DROP TABLE t1,t2,t3,t4,t5;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								--echo End of 5.0 tests
							 | 
						||
| 
								 | 
							
								
							 |