/*语句执行时间查看*/declare @begin_date datetimedeclare @end_date datetimeselect @begin_date = getdate()SELECT COUNT(*) AS CNT FROM Studentselect @end_date = getdate()select datediff(ms,@begin_date,@end_date) as '用时/毫秒'
posted on 2020-12-16 21:00 迷途行者 阅读(912) 评论(0) 编辑 收藏 举报