mysql sql语句执行时间查询

第一种：

开启profile

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1 2	mysql> set profiling=1; Query OK, 0 rows affected (0.00 sec)

eg：

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1 2 3 4 5 6 7 8

mysql> select * from test_1; mysql> show profiles; +----------+------------+----------------------+ | Query_ID | Duration   | Query                | +----------+------------+----------------------+ |        1 | 0.84718100 | select * from test_1 | +----------+------------+----------------------+ 1 row in set (0.00 sec)

第二种：(通过时间差查看)

delimiter // set @d=now();
select * from comment;
select timestampdiff(second,@d,now());
delimiter ;


Query OK, 0 rows affected (1 min 55.58 sec)


+----------------------------------+
| timestampdiff(second, @d, now()) |
+----------------------------------+
|                                2 |
+----------------------------------+
1 row in set (1 min 55.58 sec)