MSSQLÖмÆËãÁ½¸öÈÕÆÚÖ®¼äÏà¸ô xxÌìxxСʱxx·ÖxxÃë
DECLARE @dt1 AS datetime, @dt2 AS datetime;
SELECT @dt1 = '2008-8-4 9:36:41', @dt2 = '2008-8-2 9:33:39';
DECLARE @Days AS int, @Hours AS int, @Minutes AS int, @Seconds AS int;
SET @Seconds = DATEDIFF( second, @dt2, @dt1);
SET @Days = @Seconds / (24 * 60 * 60)
SET @Seconds = @Seconds - @Days * 24 * 60 * 60
SET @Hours = @Seconds / (60 * 60);
SET @Seconds = @Seconds - @Hours * 60 * 60
SET @Minutes = @Seconds / 60;
SET @Seconds = @Seconds - @Minutes * 60;
SELECT CONVERT(varchar(10), @Days ) + 'Ìì'
+ CONVERT(varchar(10), @Hours ) + 'Сʱ'
+ CONVERT(varchar(10), @Minutes ) + '·Ö'
+ CONVERT(varchar(10), @Seconds ) + 'Ãë';
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SELECT 'a','a'
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select id,row_number() over (partition by snm order by id) from stu
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id snm
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111 111W
222 222N
333 3123
444 3123
555 3123
666 3232
777 3232
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