Question

您好我正在使用MySQL，

SHOW PROFILES;

返回一个长列表，例如：

 |Query_ID|Duration     |Query
>| 9    |    0.00028550 |   INSERT INTO Duration(Status,DURATION,Query_ID)|

我正在尝试复制这个，所以我可以将结果插入到表中并添加WHERE子句。

所以我试过这个

SELECT Query_ID, STATE, FORMAT(DURATION, 6) AS DURATION
FROM INFORMATION_SCHEMA.PROFILING
WHERE QUERY_ID = 9;

但是这会返回一个较低级别的视图（我不想要）：

开始0.000053开盘0.000088

与以下内容相同：

SHOW PROFILE;

我将如何重新创建SHOW PROFILES？所以我可以这样做：

INSERT INTO Duration(Query_ID,Status,DURATION)
SELECT * FROM SHOW PROFILE
WHERE PROFILE.QUERY_ID = 9;

由于

Answer 1

按QUERY_ID分组。要获取状态，您需要STATE SEQ的记录的DURATION;要获得持续时间，只需对组中每条记录的INSERT INTO Duration (Query_ID, Status, DURATION) SELECT QUERY_ID, STATE, t.DURATION FROM INFORMATION_SCHEMA.PROFILING JOIN ( SELECT QUERY_ID, MAX(SEQ) AS SEQ, SUM(DURATION) AS DURATION FROM INFORMATION_SCHEMA.PROFILING WHERE QUERY_ID = 9 GROUP BY QUERY_ID -- superfluous in the presence of the above filter ) t USING (QUERY_ID, SEQ)求和：

{{1}}

在MySQL中为SHOW PROFILES变量重新创建代码

1 个答案: