例子: select count(*) from table where DATEDIFF ([second], 2004-09-18 00:00:18, 2004-09-18 00:00:19) 0 说明 select DATEDIFF(day, time1 , time2) 对应示例语句如下 select DATEDIFF(day, 2010-07-23 0:41:18, 2010-07-23 23:41:18) time1 ti例子:select count(*) from table where DATEDIFF ([second], 2004-09-18 00:00:18, 2004-09-18 00:00:19) > 0说明select DATEDIFF(day, time1 , time2) 对应示例语句如下selec...
本文实例为大家分享SQL SERVER数据库备份的具体代码，供大家参考，具体内容如下/**批量循环备份用户数据库，做为数据库迁移临时用 */SET NOCOUNT ONDECLARE @d varchar(8) DECLARE @Backup_Flag NVARCHAR(10)SET @d=convert(varchar(8),getdate(),112) /***自定义选择备份哪些数据库****/ --SET @Backup_Flag=UserDB -- 所用的用户数据库 SET @Backup_Flag=AlwaysOnDB -- AlwaysOn 用户数据库CREATE TABLE #T (ID INT NOT...