374
374
EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
375
375
LEFT JOIN t3 ON t2.b=t3.b;
376
376
id select_type table type possible_keys key key_len ref rows Extra
381
381
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
382
382
LEFT JOIN t3 ON t2.b=t3.b;