224 lines
		
	
	
		
			5.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
		
		
			
		
	
	
			224 lines
		
	
	
		
			5.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
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								SET SESSION STORAGE_ENGINE = InnoDB;
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								drop table if exists t1,t2,t3;
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								set @save_query_cache_size = @@global.query_cache_size;
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								set GLOBAL query_cache_size = 1355776;
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								flush status;
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								set autocommit=0;
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								create table t1 (a int not null);
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								insert into t1 values (1),(2),(3);
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								select * from t1;
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								a
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								1
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								2
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								3
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	0
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								drop table t1;
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								commit;
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								set autocommit=1;
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								begin;
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								create table t1 (a int not null);
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								insert into t1 values (1),(2),(3);
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								select * from t1;
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								a
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								1
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								2
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								3
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	1
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								drop table t1;
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								commit;
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								create table t1 (a int not null);
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								create table t2 (a int not null);
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								create table t3 (a int not null);
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								insert into t1 values (1),(2);
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								insert into t2 values (1),(2);
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								insert into t3 values (1),(2);
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								select * from t1;
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								a
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								1
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								2
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								select * from t2;
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								a
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								1
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								2
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								select * from t3;
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								a
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								1
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								2
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	3
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								show status like "Qcache_hits";
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								Variable_name	Value
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								Qcache_hits	0
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								begin;
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								select * from t1;
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								a
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								1
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								2
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								select * from t2;
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								a
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								1
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								2
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								select * from t3;
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								a
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								1
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								2
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	6
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								show status like "Qcache_hits";
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								Variable_name	Value
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								Qcache_hits	0
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								insert into t1 values (3);
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								insert into t2 values (3);
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								insert into t1 values (4);
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								select * from t1;
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								a
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								1
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								2
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								3
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								4
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								select * from t2;
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								a
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								1
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								2
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								3
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								select * from t3;
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								a
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								1
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								2
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	2
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								show status like "Qcache_hits";
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								Variable_name	Value
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								Qcache_hits	1
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								commit;
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	2
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								drop table t3,t2,t1;
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								CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY (id));
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								select count(*) from t1;
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								count(*)
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								0
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								insert into t1 (id) values (0);
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								select count(*) from t1;
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								count(*)
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								1
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								drop table t1;
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								CREATE TABLE t1 ( id int(10) NOT NULL auto_increment, a varchar(25) default NULL, PRIMARY KEY  (id), UNIQUE KEY a (a));
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								CREATE TABLE t2 ( id int(10) NOT NULL auto_increment, b varchar(25) default NULL, PRIMARY KEY  (id), UNIQUE KEY b (b));
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								CREATE TABLE t3 ( id int(10) NOT NULL auto_increment, t1_id int(10) NOT NULL default '0', t2_id int(10) NOT NULL default '0', state int(11) default NULL, PRIMARY KEY  (id), UNIQUE KEY t1_id (t1_id,t2_id), KEY t2_id (t2_id,t1_id), CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`), CONSTRAINT `t3_ibfk_2` FOREIGN KEY (`t2_id`) REFERENCES `t2` (`id`));
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								INSERT INTO t1 VALUES (1,'me');
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								INSERT INTO t2 VALUES (1,'you');
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								INSERT INTO t3 VALUES (2,1,1,2);
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								delete from t3 where t1_id = 1 and t2_id = 1;
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								select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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								id	a
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								begin;
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								insert into t3 VALUES ( NULL, 1, 1, 2 );
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								insert into t3 VALUES ( NULL, 1, 1, 2 );
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								ERROR 23000: Duplicate entry '1-1' for key 't1_id'
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								commit;
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								select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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								id	a
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								1	me
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								drop table t3,t2,t1;
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								SET SESSION STORAGE_ENGINE = InnoDB;
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								SET @@autocommit=1;
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								connection default
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								SHOW VARIABLES LIKE 'have_query_cache';
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								Variable_name	Value
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								have_query_cache	YES
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								SET GLOBAL query_cache_size = 200000;
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								flush status;
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								SET @@autocommit=1;
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								SET SESSION STORAGE_ENGINE = InnoDB;
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								CREATE TABLE t2 (s1 int, s2 varchar(1000), key(s1));
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								INSERT INTO t2 VALUES (1,repeat('a',10)),(2,repeat('a',10)),(3,repeat('a',10)),(4,repeat('a',10));
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								COMMIT;
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								START TRANSACTION;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								0
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								UPDATE t2 SET s2 = 'w' WHERE s1 = 3;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								1
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	0
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								connection connection1
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								START TRANSACTION;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								0
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								INSERT INTO t2 VALUES (5,'w');
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								1
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								COMMIT;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								1
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	0
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								connection default
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								1
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								COMMIT;
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	0
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								2
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								show status like "Qcache_queries_in_cache";
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								Variable_name	Value
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								Qcache_queries_in_cache	1
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								connection connection1
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								2
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								START TRANSACTION;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								2
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								INSERT INTO t2 VALUES (6,'w');
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								3
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								connection default
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								2
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| 
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								START TRANSACTION;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								2
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								DELETE from t2 WHERE s1=3;
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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								count(*)
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								1
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								COMMIT;
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								connection connection1
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								COMMIT;
							 | 
						||
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								SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
							 | 
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								count(*)
							 | 
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								2
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						||
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								show status like "Qcache_queries_in_cache";
							 | 
						||
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								 | 
							
								Variable_name	Value
							 | 
						||
| 
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								Qcache_queries_in_cache	1
							 | 
						||
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								 | 
							
								show status like "Qcache_hits";
							 | 
						||
| 
								 | 
							
								Variable_name	Value
							 | 
						||
| 
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								Qcache_hits	1
							 | 
						||
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								set @@global.query_cache_size = @save_query_cache_size;
							 | 
						||
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								drop table t2;
							 |