460 lines
12 KiB
Plaintext
460 lines
12 KiB
Plaintext
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drop table if exists t1,t2;
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set @a := foo;
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ERROR 42S22: Unknown column 'foo' in 'field list'
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set @a := connection_id() + 3;
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select @a - connection_id();
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@a - connection_id()
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3
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set @b := 1;
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select @b;
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@b
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1
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CREATE TABLE t1 ( i int not null, v int not null,index (i));
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insert into t1 values (1,1),(1,3),(2,1);
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create table t2 (i int not null, unique (i));
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insert into t2 select distinct i from t1;
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select * from t2;
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i
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1
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2
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select distinct t2.i,@vv1:=if(sv1.i,1,0),@vv2:=if(sv2.i,1,0),@vv3:=if(sv3.i,1,0), @vv1+@vv2+@vv3 from t2 left join t1 as sv1 on sv1.i=t2.i and sv1.v=1 left join t1 as sv2 on sv2.i=t2.i and sv2.v=2 left join t1 as sv3 on sv3.i=t2.i and sv3.v=3;
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i @vv1:=if(sv1.i,1,0) @vv2:=if(sv2.i,1,0) @vv3:=if(sv3.i,1,0) @vv1+@vv2+@vv3
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1 1 0 1 2
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2 1 0 0 1
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explain select * from t1 where i=@vv1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref i i 4 const 1
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select @vv1,i,v from t1 where i=@vv1;
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@vv1 i v
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1 1 1
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1 1 3
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explain select * from t1 where @vv1:=@vv1+1 and i=@vv1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
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explain select @vv1:=i from t1 where i=@vv1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL i 4 NULL 3 Using where; Using index
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explain select * from t1 where i=@vv1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref i i 4 const 1
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drop table t1,t2;
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set @a=0,@b=0;
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select @a:=10, @b:=1, @a > @b, @a < @b;
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@a:=10 @b:=1 @a > @b @a < @b
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10 1 1 0
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select @a:="10", @b:="1", @a > @b, @a < @b;
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@a:="10" @b:="1" @a > @b @a < @b
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10 1 1 0
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select @a:=10, @b:=2, @a > @b, @a < @b;
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@a:=10 @b:=2 @a > @b @a < @b
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10 2 0 1
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select @a:="10", @b:="2", @a > @b, @a < @b;
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@a:="10" @b:="2" @a > @b @a < @b
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10 2 1 0
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select @a:=1;
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@a:=1
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1
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select @a, @a:=1;
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@a @a:=1
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1 1
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create table t1 (id int, d double, c char(10));
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insert into t1 values (1,2.0, "test");
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select @c:=0;
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@c:=0
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0
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update t1 SET id=(@c:=@c+1);
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select @c;
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@c
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1
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select @c:=0;
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@c:=0
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0
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update t1 set id=(@c:=@c+1);
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select @c;
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@c
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1
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select @c:=0;
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@c:=0
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0
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select @c:=@c+1;
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@c:=@c+1
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1
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select @d,(@d:=id),@d from t1;
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@d (@d:=id) @d
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NULL 1 1
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select @e,(@e:=d),@e from t1;
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@e (@e:=d) @e
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NULL 2 2
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select @f,(@f:=c),@f from t1;
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@f (@f:=c) @f
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NULL test test
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set @g=1;
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select @g,(@g:=c),@g from t1;
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@g (@g:=c) @g
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1 test 0
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select @c, @d, @e, @f;
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@c @d @e @f
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1 1 2 test
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select @d:=id, @e:=id, @f:=id, @g:=@id from t1;
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@d:=id @e:=id @f:=id @g:=@id
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1 1 1 NULL
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select @c, @d, @e, @f, @g;
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@c @d @e @f @g
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1 1 1 1 NULL
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drop table t1;
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select @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b, @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b;
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@a:=10 @b:=2 @a>@b @a:="10" @b:="2" @a>@b @a:=10 @b:=2 @a>@b @a:="10" @b:="2" @a>@b
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10 2 1 10 2 1 10 2 1 10 2 1
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create table t1 (i int not null);
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insert t1 values (1),(2),(2),(3),(3),(3);
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select @a:=0;
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@a:=0
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0
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select @a, @a:=@a+count(*), count(*), @a from t1 group by i;
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@a @a:=@a+count(*) count(*) @a
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0 1 1 0
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0 2 2 0
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0 3 3 0
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select @a:=0;
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@a:=0
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0
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select @a+0, @a:=@a+0+count(*), count(*), @a+0 from t1 group by i;
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@a+0 @a:=@a+0+count(*) count(*) @a+0
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0 1 1 0
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0 2 2 0
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0 3 3 0
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set @a=0;
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select @a,@a:="hello",@a,@a:=3,@a,@a:="hello again" from t1 group by i;
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@a @a:="hello" @a @a:=3 @a @a:="hello again"
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0 hello 0 3 0 hello again
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0 hello 0 3 0 hello again
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0 hello 0 3 0 hello again
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select @a,@a:="hello",@a,@a:=3,@a,@a:="hello again" from t1 group by i;
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@a @a:="hello" @a @a:=3 @a @a:="hello again"
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hello again hello hello again 3 hello again hello again
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hello again hello hello again 3 hello again hello again
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hello again hello hello again 3 hello again hello again
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drop table t1;
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set @a=_latin2'test';
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select charset(@a),collation(@a),coercibility(@a);
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charset(@a) collation(@a) coercibility(@a)
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latin2 latin2_general_ci 2
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select @a=_latin2'TEST';
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@a=_latin2'TEST'
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1
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select @a=_latin2'TEST' collate latin2_bin;
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@a=_latin2'TEST' collate latin2_bin
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0
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set @a=_latin2'test' collate latin2_general_ci;
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select charset(@a),collation(@a),coercibility(@a);
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charset(@a) collation(@a) coercibility(@a)
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latin2 latin2_general_ci 2
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select @a=_latin2'TEST';
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@a=_latin2'TEST'
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1
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select @a=_latin2'TEST' collate latin2_bin;
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@a=_latin2'TEST' collate latin2_bin
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0
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select charset(@a:=_latin2'test');
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charset(@a:=_latin2'test')
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latin2
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select collation(@a:=_latin2'test');
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collation(@a:=_latin2'test')
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latin2_general_ci
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select coercibility(@a:=_latin2'test');
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coercibility(@a:=_latin2'test')
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2
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select collation(@a:=_latin2'test' collate latin2_bin);
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collation(@a:=_latin2'test' collate latin2_bin)
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latin2_bin
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select coercibility(@a:=_latin2'test' collate latin2_bin);
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coercibility(@a:=_latin2'test' collate latin2_bin)
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2
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select (@a:=_latin2'test' collate latin2_bin) = _latin2'TEST';
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(@a:=_latin2'test' collate latin2_bin) = _latin2'TEST'
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0
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select charset(@a),collation(@a),coercibility(@a);
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charset(@a) collation(@a) coercibility(@a)
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latin2 latin2_bin 2
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select (@a:=_latin2'test' collate latin2_bin) = _latin2'TEST' collate latin2_general_ci;
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(@a:=_latin2'test' collate latin2_bin) = _latin2'TEST' collate latin2_general_ci
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1
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set @var= NULL ;
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select FIELD( @var,'1it','Hit') as my_column;
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my_column
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0
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select @v, coercibility(@v);
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@v coercibility(@v)
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NULL 2
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set @v1=null, @v2=1, @v3=1.1, @v4=now();
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select coercibility(@v1),coercibility(@v2),coercibility(@v3),coercibility(@v4);
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coercibility(@v1) coercibility(@v2) coercibility(@v3) coercibility(@v4)
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2 2 2 2
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set session @honk=99;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '@honk=99' at line 1
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set one_shot @honk=99;
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ERROR HY000: The 'SET ONE_SHOT' syntax is reserved for purposes internal to the MySQL server
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select @@local.max_allowed_packet;
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@@local.max_allowed_packet
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#
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select @@session.max_allowed_packet;
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@@session.max_allowed_packet
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#
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select @@global.max_allowed_packet;
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@@global.max_allowed_packet
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#
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select @@max_allowed_packet;
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@@max_allowed_packet
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#
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select @@Max_Allowed_Packet;
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@@Max_Allowed_Packet
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#
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select @@version;
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@@version
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#
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select @@global.version;
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@@global.version
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#
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End of 4.1 tests
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set @first_var= NULL;
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create table t1 select @first_var;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`@first_var` longblob
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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set @first_var= cast(NULL as signed integer);
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create table t1 select @first_var;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`@first_var` bigint(20) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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set @first_var= NULL;
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create table t1 select @first_var;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`@first_var` bigint(20) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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set @first_var= concat(NULL);
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create table t1 select @first_var;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`@first_var` longblob
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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set @first_var=1;
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set @first_var= cast(NULL as CHAR);
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create table t1 select @first_var;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`@first_var` longtext
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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set @a=18446744071710965857;
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select @a;
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@a
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18446744071710965857
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CREATE TABLE `bigfailure` (
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`afield` BIGINT UNSIGNED NOT NULL
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);
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INSERT INTO `bigfailure` VALUES (18446744071710965857);
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SELECT * FROM bigfailure;
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afield
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18446744071710965857
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select * from (SELECT afield FROM bigfailure) as b;
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afield
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18446744071710965857
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select * from bigfailure where afield = (SELECT afield FROM bigfailure);
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afield
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18446744071710965857
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select * from bigfailure where afield = 18446744071710965857;
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afield
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18446744071710965857
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select * from bigfailure where afield = 18446744071710965856+1;
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afield
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18446744071710965857
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SET @a := (SELECT afield FROM bigfailure);
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SELECT @a;
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@a
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18446744071710965857
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SET @a := (select afield from (SELECT afield FROM bigfailure) as b);
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SELECT @a;
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@a
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18446744071710965857
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SET @a := (select * from bigfailure where afield = (SELECT afield FROM bigfailure));
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SELECT @a;
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@a
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18446744071710965857
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drop table bigfailure;
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create table t1(f1 int, f2 int);
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insert into t1 values (1,2),(2,3),(3,1);
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select @var:=f2 from t1 group by f1 order by f2 desc limit 1;
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@var:=f2
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3
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select @var;
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@var
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3
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create table t2 as select @var:=f2 from t1 group by f1 order by f2 desc limit 1;
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select * from t2;
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@var:=f2
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3
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select @var;
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@var
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3
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drop table t1,t2;
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insert into city 'blah';
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''blah'' at line 1
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SHOW COUNT(*) WARNINGS;
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@@session.warning_count
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1
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SHOW COUNT(*) ERRORS;
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@@session.error_count
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1
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create table t1(f1 int, f2 varchar(2), f3 float, f4 decimal(2,1));
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insert into t1 values
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(1, "a", 1.5, 1.6), (1, "a", 1.5, 1.6), (2, "b", 2.5, 2.6),
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(3, "c", 3.5, 3.6), (4, "d", 4.5, 4.6), (1, "a", 1.5, 1.6),
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(3, "c", 3.5, 3.6), (1, "a", 1.5, 1.6);
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select @a:=f1, count(f1) from t1 group by 1 desc;
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@a:=f1 count(f1)
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4 1
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3 2
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2 1
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1 4
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select @a:=f1, count(f1) from t1 group by 1 asc;
|
||
|
|
@a:=f1 count(f1)
|
||
|
|
1 4
|
||
|
|
2 1
|
||
|
|
3 2
|
||
|
|
4 1
|
||
|
|
select @a:=f2, count(f2) from t1 group by 1 desc;
|
||
|
|
@a:=f2 count(f2)
|
||
|
|
d 1
|
||
|
|
c 2
|
||
|
|
b 1
|
||
|
|
a 4
|
||
|
|
select @a:=f3, count(f3) from t1 group by 1 desc;
|
||
|
|
@a:=f3 count(f3)
|
||
|
|
4.5 1
|
||
|
|
3.5 2
|
||
|
|
2.5 1
|
||
|
|
1.5 4
|
||
|
|
select @a:=f4, count(f4) from t1 group by 1 desc;
|
||
|
|
@a:=f4 count(f4)
|
||
|
|
4.6 1
|
||
|
|
3.6 2
|
||
|
|
2.6 1
|
||
|
|
1.6 4
|
||
|
|
drop table t1;
|
||
|
|
create table t1 (f1 int);
|
||
|
|
insert into t1 values (2), (1);
|
||
|
|
select @i := f1 as j from t1 order by 1;
|
||
|
|
j
|
||
|
|
1
|
||
|
|
2
|
||
|
|
drop table t1;
|
||
|
|
create table t1(a int);
|
||
|
|
insert into t1 values(5),(4),(4),(3),(2),(2),(2),(1);
|
||
|
|
set @rownum := 0;
|
||
|
|
set @rank := 0;
|
||
|
|
set @prev_score := NULL;
|
||
|
|
select @rownum := @rownum + 1 as row,
|
||
|
|
@rank := IF(@prev_score!=a, @rownum, @rank) as rank,
|
||
|
|
@prev_score := a as score
|
||
|
|
from t1 order by score desc;
|
||
|
|
drop table t1;
|
||
|
|
create table t1(b bigint);
|
||
|
|
insert into t1 (b) values (10), (30), (10);
|
||
|
|
set @var := 0;
|
||
|
|
select if(b=@var, 999, b) , @var := b from t1 order by b;
|
||
|
|
if(b=@var, 999, b) @var := b
|
||
|
|
10 10
|
||
|
|
999 10
|
||
|
|
30 30
|
||
|
|
drop table t1;
|
||
|
|
create temporary table t1 (id int);
|
||
|
|
insert into t1 values (2), (3), (3), (4);
|
||
|
|
set @lastid=-1;
|
||
|
|
select @lastid != id, @lastid, @lastid := id from t1;
|
||
|
|
@lastid != id @lastid @lastid := id
|
||
|
|
1 -1 2
|
||
|
|
1 2 3
|
||
|
|
0 3 3
|
||
|
|
1 3 4
|
||
|
|
drop table t1;
|
||
|
|
create temporary table t1 (id bigint);
|
||
|
|
insert into t1 values (2), (3), (3), (4);
|
||
|
|
set @lastid=-1;
|
||
|
|
select @lastid != id, @lastid, @lastid := id from t1;
|
||
|
|
@lastid != id @lastid @lastid := id
|
||
|
|
1 -1 2
|
||
|
|
1 2 3
|
||
|
|
0 3 3
|
||
|
|
1 3 4
|
||
|
|
drop table t1;
|
||
|
|
CREATE TABLE t1(a INT, b INT);
|
||
|
|
INSERT INTO t1 VALUES (0, 0), (2, 1), (2, 3), (1, 1), (30, 20);
|
||
|
|
SELECT a, b INTO @a, @b FROM t1 WHERE a=2 AND b=3 GROUP BY a, b;
|
||
|
|
SELECT @a, @b;
|
||
|
|
@a @b
|
||
|
|
2 3
|
||
|
|
SELECT a, b FROM t1 WHERE a=2 AND b=3 GROUP BY a, b;
|
||
|
|
a b
|
||
|
|
2 3
|
||
|
|
DROP TABLE t1;
|
||
|
|
CREATE TABLE t1 (f1 int(11) default NULL, f2 int(11) default NULL);
|
||
|
|
CREATE TABLE t2 (f1 int(11) default NULL, f2 int(11) default NULL, foo int(11));
|
||
|
|
CREATE TABLE t3 (f1 int(11) default NULL, f2 int(11) default NULL);
|
||
|
|
INSERT INTO t1 VALUES(10, 10);
|
||
|
|
INSERT INTO t1 VALUES(10, 10);
|
||
|
|
INSERT INTO t2 VALUES(10, 10, 10);
|
||
|
|
INSERT INTO t2 VALUES(10, 10, 10);
|
||
|
|
INSERT INTO t3 VALUES(10, 10);
|
||
|
|
INSERT INTO t3 VALUES(10, 10);
|
||
|
|
SELECT MIN(t2.f1),
|
||
|
|
@bar:= (SELECT MIN(t3.f2) FROM t3 WHERE t3.f2 > foo)
|
||
|
|
FROM t1,t2 WHERE t1.f1 = t2.f1 ORDER BY t2.f1;
|
||
|
|
MIN(t2.f1) @bar:= (SELECT MIN(t3.f2) FROM t3 WHERE t3.f2 > foo)
|
||
|
|
10 NULL
|
||
|
|
DROP TABLE t1, t2, t3;
|
||
|
|
End of 5.0 tests
|
||
|
|
CREATE TABLE t1 (i INT);
|
||
|
|
CREATE TRIGGER t_after_insert AFTER INSERT ON t1 FOR EACH ROW SET @bug42188 = 10;
|
||
|
|
INSERT INTO t1 VALUES (1);
|
||
|
|
INSERT INTO t1 VALUES (1);
|
||
|
|
DROP TABLE t1;
|
||
|
|
CREATE TABLE t1(a INT);
|
||
|
|
INSERT INTO t1 VALUES (0),(0);
|
||
|
|
# BUG#55615 : should not crash
|
||
|
|
SELECT (@a:=(SELECT @a:=1 FROM t1 LIMIT 1)) AND COUNT(1) FROM t1 GROUP BY @a;
|
||
|
|
(@a:=(SELECT @a:=1 FROM t1 LIMIT 1)) AND COUNT(1)
|
||
|
|
1
|
||
|
|
1
|
||
|
|
# BUG#55564 : should not crash
|
||
|
|
SELECT IF(
|
||
|
|
@v:=LEAST((SELECT 1 FROM t1 t2 LEFT JOIN t1 ON (@v) GROUP BY t1.a), a),
|
||
|
|
count(*), 1)
|
||
|
|
FROM t1 GROUP BY a LIMIT 1;
|
||
|
|
IF(
|
||
|
|
@v:=LEAST((SELECT 1 FROM t1 t2 LEFT JOIN t1 ON (@v) GROUP BY t1.a), a),
|
||
|
|
count(*), 1)
|
||
|
|
1
|
||
|
|
DROP TABLE t1;
|
||
|
|
select @v:=@v:=sum(1) from dual;
|
||
|
|
@v:=@v:=sum(1)
|
||
|
|
1
|
||
|
|
CREATE TABLE t1(a DECIMAL(31,21));
|
||
|
|
INSERT INTO t1 VALUES (0);
|
||
|
|
SELECT (@v:=a) <> (@v:=1) FROM t1;
|
||
|
|
(@v:=a) <> (@v:=1)
|
||
|
|
1
|
||
|
|
DROP TABLE t1;
|
||
|
|
End of 5.1 tests
|