SQL实现一年中每个日期剔除节假日和星期天之后的五个日期是多少

最近公司OA系统的需求，实现一年中每个日期剔除节假日和星期天之后的五个日期是几号，每个日期都要跳过节假日和星期天，当时是真的慌了，郁闷了一天，后来半夜忽然来灵感，想想还是可以实现。

需要做一张节假日的表，存入一年中的法定节假日，然后用游标循环日期，星期天可以用datename函数剔除：datename(dw,日期)!='Sunday'

 1 ALTER PROCEDURE [dbo].[pc_Job_Insert_HolidayForUQ]
 2 as
 3 BEGIN TRY
 4
 5     --插入一年的日期
 6     if not exists(select CONVERT(varchar(10),StartDate,23) as StartDate  from [dbo].[HolidayForUQ] where year(StartDate)= year(getdate())+1)
 7     begin
 8         DECLARE @newdate varchar(4),@newdate1 varchar(4)
 9         set @newdate=year(getdate())
10         set @newdate1=year(getdate())+1
11         insert into [dbo].[HolidayForUQ]
12         select convert(varchar(10),riqi,120),'','','','','',GETDATE() from(select riqi=dateadd(dd,number,@newdate+'-12-31') from master..spt_values where type='p'
13         and number between 1 and 366) a where datepart(yy,a.riqi)=@newdate1
14     end
15
16     --创建临时表
17     CREATE TABLE #tab_HolidayForUQ(
18         ID int identity(1,1),
19         StartDate varchar(10)
20     )
21
22     --剔除节假日和周日,插入临时表，可以得到ID
23     insert into #tab_HolidayForUQ select CONVERT(varchar(10),StartDate,23) as StartDate  from [dbo].[HolidayForUQ] where  datename(dw,StartDate)!='Sunday'
24      and  StartDate not in(select convert(datetime,Holiday_Date,112) from vw_fmis_Holiday_3621 where Holiday_Date=StartDate)
25      order by StartDate asc
26
27
28     Declare @StartDate varchar(10) --定义循环的当前日期
29     DECLARE Menu CURSOR for
30         ---------
31     select CONVERT(varchar(10),StartDate,23) as StartDate from [dbo].[HolidayForUQ]   --where StrandTime >='2022-01-01'  --in('2018-10-01','2018-10-02')
32         --------
33     open Menu
34     FETCH NEXT FROM Menu into @StartDate
35     while @@FETCH_STATUS =0
36     BEGIN
37         ---------------------------------------------------------------------------------
38
39             --select HFID from [dbo].[HolidayForUQ]
40
41             DECLARE @IsID int,@starttime varchar(10),@addto1 datetime,@addto2 datetime,@addto3 datetime,@addto4 datetime,@addto5 datetime,@No1 int
42             --链接临时表
43             select @starttime=CONVERT(varchar(10),a.StartDate,23),@IsID=b.ID  from [dbo].[HolidayForUQ] a left join #tab_HolidayForUQ b
44             on a.StartDate=b.StartDate where a.StartDate=@StartDate
45
46             --select CONVERT(varchar(10),a.StartDate,23) as StartDate,b.ID  from [dbo].[HolidayForUQ] a left join #tab_HolidayForUQ b
47             --on a.StartDate=b.StartDate
48
49             if(@IsID is not null)--如果当前日期不是节假日或者周日，就根据剔除了节假日和周日临时表数据的自增ID去添加
50             begin
51                 select @addto1=StartDate from #tab_HolidayForUQ where ID=@IsID+1
52                 select @addto2=StartDate from #tab_HolidayForUQ where ID=@IsID+2
53                 select @addto3=StartDate from #tab_HolidayForUQ where ID=@IsID+3
54                 select @addto4=StartDate from #tab_HolidayForUQ where ID=@IsID+4
55                 select @addto5=StartDate from #tab_HolidayForUQ where ID=@IsID+5
56                 update [dbo].[HolidayForUQ]  set AddTo1=@addto1,AddTo2=@addto2,AddTo3=@addto3,AddTo4=@addto4,AddTo5=@addto5 where StartDate=@starttime
57             end else
58             begin
59                 --如果当前日期是节假日或者周日，就查询临时表根据大于当前日期添加
60                 select top 1 @No1=ID from #tab_HolidayForUQ where StartDate>@starttime order  by StartDate asc
61                 select @addto1=StartDate from #tab_HolidayForUQ where ID=@No1
62                 select @addto2=StartDate from #tab_HolidayForUQ where ID=@No1+1
63                 select @addto3=StartDate from #tab_HolidayForUQ where ID=@No1+2
64                 select @addto4=StartDate from #tab_HolidayForUQ where ID=@No1+3
65                 select @addto5=StartDate from #tab_HolidayForUQ where ID=@No1+4
66                 update [dbo].[HolidayForUQ]  set AddTo1=@addto1,AddTo2=@addto2,AddTo3=@addto3,AddTo4=@addto4,AddTo5=@addto5 where StartDate=@starttime
67             end
68
69         ---------------------------------------------------------------------------------
70         --next
71         FETCH NEXT FROM Menu
72        INTO @StartDate
73     END
74     CLOSE Menu
75     DEALLOCATE Menu
76 END TRY
77 --捕捉异常
78 BEGIN CATCH
79     SELECT
80         ERROR_NUMBER() as ErrorNumber,
81         ERROR_MESSAGE() as ErrorMessage
82 END CATCH;