mysql中两个特定时间之间的数据获取错误

Question

我正在尝试从我的表中选择条件为

的所有数据

performDate将在今天凌晨2点到明天凌晨2点之间

我的查询提供此错误

 Incorrect parameter count in the call to native function 'DATEDIFF'

我的查询是

    SELECT * FROM `admin_marker` WHERE   
    FROM_UNIXTIME(performDate)
 BETWEEN DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0) + '02:00'
                AND DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()+1), 0) + '02:00'

Answer 1

DATEDIFF只需要2个参数。你用3参数调用它。

Answer 2

为什么不这样做？

WHERE performdate >=  DATE_FORMAT(NOW(), '%Y-%m-%d 02:00:00') AND performdate <=  DATE_FORMAT(CURRENTDATE + INTERVAL +1 DAY '%Y-%m-%d 02:00:00')