SQL SERVER分割字符串

1、使用指定的字符串分割，返回分割后元素的个数

create function Get_StrLength

(

@str varchar(1024),

@split varchar(10)

)

returns int

as

begin

declare @location int

declare @start int

declare @length int

set @str=ltrim(rtrim(@str))

set @location=charindex(@split,@str)

set @length=1

while @location<>0

begin

set @start=@location+1

set @location=charindex(@split,@str,@start)

set @length=@length+1

end

return @length

end

调用方法：select dbo.Get_StrLength('7,5,6,7,a,f,d',',')

2、按指定符号分割字符串，返回分割后指定索引的第几个元素，像数组一样

create function Get_StrOfIndex

(

@str varchar(1024),

@split varchar(10),

@index int

)

returns varchar(1024)

as

begin

declare @location int

declare @start int

declare @next int

declare @seed int

set @str=ltrim(rtrim(@str))

set @start=1

set @next=1

set @seed=len(@split)

set @location=charindex(@split,@str)

while @location<>0 and @index>@next

begin

set @start=@location+@seed

set @location=charindex(@split,@str,@start)

set @next=@next+1

end

--说明：这儿存在两种情况：1、字符串不存在分隔符号 2、字符串中存在分隔符号，跳出while循环后，@location为0，那默认为字符串后边有一个分隔符号。

if @location=0

select @location=len(@str)+1

return substring(@str,@start,@location-@start)

end

调用方法：select dbo.Get_StrOfIndex('8,9,3,3,4,5',',',26)

3、结合上边两个函数，返回分割后的元素

create function f_splitstr

(

@SourceSql varchar(8000),

@strSeprate varchar(100)

)

returns @temp table (F1 varchar(100))

as

begin

declare @ch as varchar(100)

set @SourceSql=@SourceSql+@StrSeprate

while(@SourceSql<>'')

begin

set

@ch=left(@SourceSql,Charindex(',',@SourceSql,1)-1)

insert @temp values(@ch)

set @SourceSql=stuff(@SourceSql,1,charindex(',',@SourceSql,1),'')

end

return

end

调用方法：select * from f_splitstr('1,2,3,4,5,6',',')