--1:下面这种是SQL Server中比较简单的查询SQL语句执行时间方法,通过查询前的时间和查询后的时间差来计算的:
declare @begin_date datetime
declare @end_date datetime
select @begin_date = getdate()
<这里写上你的语句...>
select @end_date = getdate()
select datediff(ms,@begin_date,@end_date) as ‘用时/毫秒‘
--2:下面这种方法比较全面,将执行每个语句时采取的步骤作为行集返回,通过层次结构树的形式展示出来
set statistics profile on
set statistics io on
set statistics time on
go
<这里写上你的语句...>
go
set statistics profile off
set statistics io off
set statistics time off
--复制1个表到另外的表
1:insert into Table2 (a,c,d) select a,c,5 from Table1
2:select a,c into table2 from Table1
时间: 2024-11-05 16:08:06