1054
1054
(t8.b=t9.b OR t8.c IS NULL) AND
1056
1056
id select_type table type possible_keys key key_len ref rows filtered Extra
1059
1059
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where
1060
1060
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 1 100.00
1061
1061
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where