SQL 语句时间比较

View Code

--把字符轉換成日期型declare @dt1 varchar(20)
declare @dt2 varchar(20)
set @dt1=\'2009-9-01\'
set @dt2=\'2009-10-01\'
if @dt1>@dt2
print \'dt1大\'
else
print \'dt2大\'
if cast(@dt1 as datetime)>cast(@dt2 as datetime)
print \'dt1大\'
else
print \'dt2大\'
/*dt1大
dt2大
*/