查询本日记录

SELECT * FROM messages WHERE CONVERT(Nvarchar, CreateDate, 111) = CONVERT(Nvarchar, GETDATE(), 111)   ORDER BY CreateDate DESC

SELECT * FROM 表 WHERE datediff(day,列名,getdate())=0

查询本年

SELECT count(*) FROM messages WHERE datediff(year,CreateDate,getdate())=0

查询本月

SELECT count(*) FROM messages WHERE datediff(month,CreateDate,getdate())=0

本周记录

SELECT * FROM 表名 WHERE datediff(week,列名,getdate())=0

SQL 日期函数
1.   当前系统日期、时间
     select ge..