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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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20
mysql-test/r/explain.result
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@ -9,22 +9,22 @@ select * from t1 where str="foo";
id str
3 foo
explain select * from t1 where str is null;
table type possible_keys key key_len ref rows Extra
t1 ref str str 11 const 1 where used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 ref str str 11 const 1 where used
explain select * from t1 where str="foo";
table type possible_keys key key_len ref rows Extra
t1 const str str 11 const 1
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 const str str 11 const 1
explain select * from t1 ignore key (str) where str="foo";
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 4 where used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 ALL NULL NULL NULL NULL 4 where used
explain select * from t1 use key (str,str) where str="foo";
table type possible_keys key key_len ref rows Extra
t1 const str str 11 const 1
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST t1 const str str 11 const 1
explain select * from t1 use key (str,str,foo) where str="foo";
Key column 'foo' doesn't exist in table
explain select * from t1 ignore key (str,str,foo) where str="foo";
Key column 'foo' doesn't exist in table
drop table t1;
explain select 1;
Comment
No tables used
id select_type table type possible_keys key key_len ref rows Extra
1 FIRST No tables used