SELECT COUNT(*) FROM MASTER..SPT_VALUES WHERE TYPE = ‘P‘ AND DATEADD(DAY,NUMBER,‘2014-03-13‘)<=‘2014-03-26‘ AND DATEPART(WEEKDAY,DATEADD(DAY,NUMBER,‘2014-03-13‘)) IN (6,7)
T-SQL查询两个日期之间的休息日（周六周日）天数,布布扣,bubuko.com
原文：http://www.cnblogs.com/ajiangg/p/3628680.html