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new EXPLAIN

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fixed bug in mysql-test/create-test-result
fixed bug in union-subselect engine
This commit is contained in:
bell@sanja.is.com.ua
2002-09-26 23:08:22 +03:00
parent d9989c635e
commit 46a22a5be7
36 changed files with 607 additions and 457 deletions
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16
mysql-test/r/user_var.result
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@ -18,15 +18,15 @@ i @vv1:=if(sv1.i,1,0) @vv2:=if(sv2.i,1,0) @vv3:=if(sv3.i,1,0) @vv1+@vv2+@vv3
1 1 0 1 2
2 1 0 0 1
explain select * from t1 where i=@vv1;
table type possible_keys key key_len ref rows Extra
t1 ref i i 4 const 1 where used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 ref i i 4 const 1 where used
explain select * from t1 where @vv1:=@vv1+1 and i=@vv1;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 3 where used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 ALL NULL NULL NULL NULL 3 where used
explain select @vv1:=i from t1 where i=@vv1;
table type possible_keys key key_len ref rows Extra
t1 index NULL i 4 NULL 3 where used; Using index
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 index NULL i 4 NULL 3 where used; Using index
explain select * from t1 where i=@vv1;
table type possible_keys key key_len ref rows Extra
t1 ref i i 4 const 1 where used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 ref i i 4 const 1 where used
drop table t1,t2;