2993
2993
EXPLAIN SELECT b FROM t1, t2 WHERE b=c AND a=1;
2994
2994
id select_type table type possible_keys key key_len ref rows Extra
2995
2995
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
2997
2997
EXPLAIN SELECT b FROM t1, t2 WHERE b=c AND a=4;
2998
2998
id select_type table type possible_keys key key_len ref rows Extra
2999
2999
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1