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use ref not range for ... WHERE key IN (val)

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serg@sergbook.mysql.com
2004-06-21 19:42:00 +03:00
parent 3b34ea8cd0
commit e2a3ca8637
2 changed files with 4 additions and 2 deletions
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mysql-test/r/range.result
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@@ -255,7 +255,7 @@ t1 ref y y 5 const 1 Using where
t2 range x x 5 NULL 2 Using where
explain select count(*) from t1 where x in (1);
table type possible_keys key key_len ref rows Extra
t1 range x x 5 NULL 1 Using where; Using index
t1 ref x x 5 const 1 Using where; Using index
explain select count(*) from t1 where x in (1,2);
table type possible_keys key key_len ref rows Extra
t1 range x x 5 NULL 2 Using where; Using index