判断数据是否提交!!!!
select count(*) from worklog where userid=@userid and DATEDIFF('d', addDate, Now())=0
error:Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?userid and DATEDIFF('d', addDate, Now())=0' at line 1
(16 ms taken)
userid and DATEDIFF('d', addDate, Now())=0' at line 1 这里哪里错了呢???
select count(*) from worklog where userid=@userid and DATEDIFF('d', addDate, Now())=0
error:Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?userid and DATEDIFF('d', addDate, Now())=0' at line 1
(16 ms taken)
userid and DATEDIFF('d', addDate, Now())=0' at line 1 这里哪里错了呢???
解决方案 »
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mysql里的datediff()函数只有两个参数,并且只返回日期部分的差值。