最近，在論壇中，遇到了不少比較難的sql問題，雖然自己都能解決，但發現過幾天后，就記不起來了，也忘記解決的方法了。

所以，覺得有必要記錄下來，這樣以后再次碰到這類問題，也能從中獲取解答的思路。?

MS-SQL取連續日期問題 ? http://bbs.csdn.net/topics/390635235?page=1#post-395995697

我現在需要得出表A中所有FBeginDate和FEndDate字段間的日期

下面是我的解法，使用了遞歸查詢：

?

drop table tbcreate table tb(FBeginDate datetime,FEndDate datetime)insert into tb select '2010-10-01','2010-10-01' union all select '2010-10-01','2010-10-07' union all select '2011-01-30','2011-02-12';with t as ( select 1 as number union all select number + 1 from t where t.number < 100 )select tb.FBeginDate,tb.FEndDate,dateadd(day,t.number-1,FBeginDate) as '兩個日期之間的天' from tb inner join ton datediff(day,FBeginDate,FEndDate) +1 >= t.number order by tb.FBeginDate,'兩個日期之間的天'/* FBeginDate FEndDate 兩個日期之間的天 2010-10-01 00:00:00.000 2010-10-01 00:00:00.000 2010-10-01 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-01 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-02 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-03 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-04 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-05 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-06 00:00:00.000 2010-10-01 00:00:00.000 2010-10-07 00:00:00.000 2010-10-07 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-01-30 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-01-31 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-01 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-02 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-03 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-04 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-05 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-06 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-07 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-08 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-09 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-10 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-11 00:00:00.000 2011-01-30 00:00:00.000 2011-02-12 00:00:00.000 2011-02-12 00:00:00.000 */

?

轉載于:https://www.cnblogs.com/momogua/p/8304471.html

總結

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