721
721
Note 1249 Select 3 was reduced during optimization
722
722
Note 1249 Select 2 was reduced during optimization
724
724
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
725
725
id select_type table type possible_keys key key_len ref rows filtered Extra
726
726
1 PRIMARY t2 index NULL id 5 NULL 2 100.00 Using where; Using index