SQL中实现SPLIT函数几种方法

作者：袖梨 2022-06-29

例1

代码如下

复制代码

create function f_split(@SourceSql varchar(8000),@StrSeprate varchar(10))
returns @temp table(a varchar(100))
--实现split功能的函数
--date    :2003-10-14
as
begin
    declare @i int
    set @SourceSql=rtrim(ltrim(@SourceSql))
    set @i=charindex(@StrSeprate,@SourceSql)
    while @i>=1
    begin
        insert @temp values(left(@SourceSql,@i-1))
        set @SourceSql=substring(@SourceSql,@i+1,len(@SourceSql)-@i)
        set @i=charindex(@StrSeprate,@SourceSql)
    end
    if @SourceSql<>''
       insert @temp values(@SourceSql)
    return
end

select * from dbo.f_split('1,2,3,4',',')

a
--------------------
1
2
3
4

（所影响的行数为 4 行）

例2

代码如下

复制代码

--SQL Server Split函数
--Author:zc_0101
--说明：
--支持分割符多字节
--使用方法
--Select * FROM DBO.F_SQLSERVER_SPLIT('1203401230105045','0')
--select * from DBO.F_SQLSERVER_SPLIT('abc1234a12348991234','1234')
--Select * from DBO.F_SQLSERVER_SPLIT('ABC',',')

CREATE FUNCTION F_SQLSERVER_SPLIT(@Long_str varchar(8000),@split_str varchar(100))
RETURNS @tmp TABLE(
    ID          inT     IDENTITY PRIMARY KEY,
    short_str   varchar(8000)
)
AS
BEGIN
    DECLARE @long_str_Tmp varchar(8000),@short_str varchar(8000),@split_str_length int
    SET @split_str_length = LEN(@split_str)
    IF CHARINDEX(@split_str,@Long_str)=1
         SET @long_str_Tmp=SUBSTRING(@Long_str,@split_str_length+1,LEN(@Long_str)-@split_str_length)
    ELSE
         SET @long_str_Tmp=@Long_str
    IF CHARINDEX(REVERSE(@split_str),REVERSE(@long_str_Tmp))>1
        SET @long_str_Tmp=@long_str_Tmp+@split_str
    ELSE
        SET @long_str_Tmp=@long_str_Tmp
    IF CHARINDEX(@split_str,@long_str_Tmp)=0
        Insert INTO @tmp select @long_str_Tmp
    ELSE
        BEGIN
            WHILE CHARINDEX(@split_str,@long_str_Tmp)>0
                BEGIN
                    SET @short_str=SUBSTRING(@long_str_Tmp,1,CHARINDEX(@split_str,@long_str_Tmp)-1)
                    DECLARE @long_str_Tmp_LEN INT,@split_str_Position_END int
                    SET @long_str_Tmp_LEN = LEN(@long_str_Tmp)
                    SET @split_str_Position_END = LEN(@short_str)+@split_str_length
                    SET @long_str_Tmp=REVERSE(SUBSTRING(REVERSE(@long_str_Tmp),1,@long_str_Tmp_LEN-@split_str_Position_END))
                    IF @short_str<>'' Insert INTO @tmp select @short_str
                END
        END
    RETURN
END

例3

Sql2000andSql2005实用的Split函数

代码如下

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sql2000
CREATE FUNCTION [dbo].[splitstring_array]
(
    @string nvarchar(4000),@split char(1)
)

RETURNS @array table
(
    oneStr nvarchar(100)
)

AS

BEGIN
declare @v_code varchar(60)

--zell 2006-05-26
--set @string = replace(@string,' ',@split)
--set @string = replace(@string,'，',@split)

while len(@string) > 0
    begin
      if charindex(@split,@string,1) != 0
         begin
           set @v_code = substring(@string,1,charindex(@split,@string,1)-1)
           set @string = substring(@string,charindex(@split,@string,1)+1,len(@string))
         end
      else if charindex(@split,@string,1) = 0
         begin
           set @v_code = @string
           set @string = ''
         end
      insert into @array(onestr) values(@v_code)
    end
RETURN
END

sql2005
CREATE function [dbo].[func_splitid]
(@str varchar(max),@split varchar(10))
RETURNS @t Table (c1 nvarchar(100))
AS
BEGIN
    DECLARE @x XML
    SET @x = CONVERT(XML,'')
    INSERT INTO @t SELECT x.item.value('@id[1]', 'nvarchar(100)') FROM @x.nodes('//items/item') AS x(item)
    RETURN
END

SQL中实现SPLIT函数几种方法

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