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Fixed crashing bug with alter table when table was in use (Bug #3643)

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We didn't use 'only index' for tables of type 'const'. (Bug #3497)
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monty@mysql.com
2004-05-05 12:31:17 +03:00
parent 59ddd8c738
commit 7e3cf5958c
11 changed files with 82 additions and 20 deletions
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mysql-test/r/null_key.result
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@@ -12,7 +12,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref a,b a 9 const,const 1 Using where; Using index
explain select * from t1 where a=2 and b = 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const a,b a 9 const,const 1
1 SIMPLE t1 const a,b a 9 const,const 1 Using index
explain select * from t1 where a<=>b limit 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL a 9 NULL 12 Using where; Using index