mysql - Mysql查询以获取相差5分钟的行

Question

我有两个与外键关系链接的表。两个表都有创建日期列。如何找到时差为 5 分钟加或减的所有匹配行。

Answer 1

您需要使用 timestampdiff 函数和 abs 函数，如下所示：

select * from table1 a, table2 b where a.ID=b.FOREIGNID and ABS(TIMESTAMPDIFF(MINUTE,a.CREATEDDATE,b.CREATEDDATE)) > 5

两个函数的文档：

http://dev.mysql.com/doc/refman/5.0/en/mathematical-functions.html#function_abs

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_timestampdiff

Answer 2

那应该行得通。还是双方都需要？

SELECT *
  FROM tableA a
  JOIN tableB b
    ON a.keyInfo = b.keyInfo
   AND b.created BETWEEN a.created - 5/(24*60) AND a.created + 5/(24*60)