大佬教程收集整理的这篇文章主要介绍了sqlserver分隔字符串,查找父类下所有子类,删除重复字符串,计算一字符串在别一字符中出现的次数,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
/*dnt下面分隔字符串函数*/
create functION [dnt_split]
(
@splitString NVARCHAR(4000),
@separator CHAR(1) = ','
)
RETURNS @splitStringstable TABLE
(
[item] NVARCHAR(200)
)
AS
BEGIN
DECLARE @currenTindex INT
DECLARE @nexTindex INT
DECLARE @returntext NVARCHAR(200)
SELECT @currenTindex=1
WHILE(@currenTindex<=datalength(@splitString)/2)
BEGIN
SELECT @nexTindex=charindex(@separator,@splitString,@currenTindeX)
IF(@nexTindex=0 OR @nexTindex IS NULL)
SELECT @nexTindex=datalength(@splitString)/2+1
SELECT @returntext=subString(@splitString,@currenTindex,@nexTindex-@currenTindeX)
INSERT INTO @splitStringstable([item])
VALUES(@returntext)
SELECT @currenTindex=@nexTindex+1
END
RETURN
END
/*查找分类下面所有子类*/
create function f_child(@typEID)
returns @re table(typEID int,Level int)
as
begin
declare @l int
set @l=0
insert @re SELEct @typEID,@l
while @@rowcount>0
begin
set @l=@l+1
insert @re SELEct a.typEID,@l
from product_type a join @re b on a.fatherId=b.typEID
where @L_301_0@
end
return
end
/*删除以逗号分隔的重复字符串*/
create function deleteRepeatStrs
(@strs varchar(100))
returns varchar(100)
as
begin
declare @norepeatStr varchar(100)
declare @index int
set @norepeatStr=''
declare @id varchar(10)
declare repeatcursor cursor for SELEct * from dnt_split(@strs,',')
open repeatcursor
fetch next from repeatcursor into @id
while @@fetch_status=0
begin
SELEct @index=charindex(@id,@norepeatStr,0)
if @index=0
begin
set @norepeatStr=@norepeatStr+@id+','
end
fetch next from repeatcursor into @id
end
set @norepeatStr=subString(@norepeatStr,1,len(@norepeatStr)-1)
close repeatcursor
deallocate repeatcursor
return @norepeatStr
end
/*计算参数2在参数1中出现的次数*/
ALTER function cisum(@thestr varchar(1000),@searchstr varchar(100))returns smallintasbegindeclare @a smallint,@b smallintset @a=0set @b=1while @b<=len(@thestr) begin if subString(@thestr,@b,len(@searchstr))=@searchstr begin set @a=@a+1 end set @b=@b+1 endreturn @aend
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