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select.result, select.test:

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Added a test case for bug #5333.
null_key.result, key_primary.result:
  Made covering index usable for const tables.
sql_select.cc:
  Made covering index usable for const tables:
  downported the corresponding code from 4.1.
  Simultaneously fixed bug #5333 reported for 4.1.
  The bug was due to the fact that field index in join
  structures was always set to 0 for const tables.
This commit is contained in:
igor@rurik.mysql.com
2004-09-02 22:06:30 -07:00
parent 4b760fcb94
commit f888026fdc
5 changed files with 49 additions and 3 deletions
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mysql-test/r/null_key.result
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@@ -12,7 +12,7 @@ table type possible_keys key key_len ref rows Extra
t1 ref a,b a 9 const,const 1 Using where; Using index
explain select * from t1 where a=2 and b = 2;
table type possible_keys key key_len ref rows Extra
t1 const a,b a 9 const,const 1
t1 const a,b a 9 const,const 1 Using index
explain select * from t1 where a<=>b limit 2;
table type possible_keys key key_len ref rows Extra
t1 index NULL a 9 NULL 12 Using where; Using index