sql server 将字符串分割成表函数 strsplitetotable

在sql server里，调用存储过程时，经常需要将数据拼成字符串做为参数调用存储过程，而在储存过程中分割字符串虽然简单但麻烦，封装了该函数，可以将拼串分割成内存表返回，方便使用，返回的表字段从a,b,c,d,e开始，最多支持15列

调用方式：select * from flfcp_StrSplitToTable('a,b,c|e,f,g', ',', '|')

返回结果：

调用方式：select * from flfcp_StrSplitToTable('a,b,c,e,f,g', ',', '')

返回结果：

调用方式：select * from flfcp_StrSplitToTable('a,b,c,e,f,g', '', ',')

返回结果：

/****** Object:  UserDefinedFunction [dbo].[flfcp_StrSplitToTable]    Script Date: 08/05/2013 20:29:07 ******/
SET QUOTED_IDENTIFIER ON
GO
CREATE FUNCTION [dbo].[flfcp_StrSplitToTable](@strList VARCHAR(5000), @columnSplitChar VARCHAR(1), @rowSplitChar VARCHAR(1))
RETURNS @tempTable TABLE(ID INT IDENTITY(1,1) PRIMARY KEY,
    [A] [varchar](100) NULL,
    [B] [varchar](100) NULL,
    [C] [varchar](100) NULL,
    [D] [varchar](100) NULL,
    [E] [varchar](100) NULL,
    [F] [varchar](100) NULL,
    [G] [varchar](100) NULL,
    [H] [varchar](100) NULL,
    [I] [varchar](100) NULL,
    [J] [varchar](100) NULL,
    [K] [varchar](100) NULL,
    [L] [varchar](100) NULL,
    [M] [varchar](100) NULL,
    [N] [varchar](100) NULL,
    [O] [varchar](100) NULL ) 
AS
BEGIN 
 DECLARE @A varchar(100)
 DECLARE @B varchar(100)
 DECLARE @C varchar(100)
 DECLARE @D varchar(100)
 DECLARE @E varchar(100)
 DECLARE @F varchar(100)
 DECLARE @G varchar(100)
 DECLARE @H varchar(100)
 DECLARE @I varchar(100)
 DECLARE @J varchar(100)
 DECLARE @K varchar(100)
 DECLARE @L varchar(100)
 DECLARE @M varchar(100)
 DECLARE @N varchar(100)
 DECLARE @O varchar(100)
    
 DECLARE @colNo  INT     -- 列的序号
 DECLARE @colStart INT     -- 列开始查询位置
 DECLARE @colEnd  INT     -- 列查找到的位置
 DECLARE @strData VARCHAR(2000)  -- 内容 
 DECLARE @colData VARCHAR(2000)  -- 列内容 
 DECLARE @rowStart INT     -- 行开始查询位置
 DECLARE @rowEnd  INT     -- 行查找到的位置
 DECLARE @strLen  INT     -- 字符串长度
 DECLARE @LastFlag INT     -- 最后一行标志
 DECLARE @LastFlag2 INT     -- 最后一行标志
 
 SET @LastFlag=1
 SET @LastFlag2=1
    
 IF ( LEN(ISNULL(@strList,''))>0 )
 BEGIN
  IF ( LEN(ISNULL(@columnSplitChar,''))=0 )
  BEGIN  --列为空的情况
   IF ( LEN(ISNULL(@rowSplitChar,''))=0 )
   BEGIN
    -- 一行一列
    INSERT INTO @tempTable (A) VALUES(@strList)
   END
   ELSE
   BEGIN
    -- 多行一列
    SET @rowStart=1
    SET @rowEnd= CHARINDEX(@rowSplitChar,@strList,@rowStart)
    
    WHILE(@rowEnd>0 )
    BEGIN
     SET @strData =SUBSTRING(@strList,@rowStart,@rowEnd-@rowStart)
     INSERT INTO @tempTable (A) VALUES(@strData)
     
     SET @rowStart=@rowEnd+1
     SET @rowEnd= CHARINDEX(@rowSplitChar,@strList,@rowStart)
    END
    
    --最后行
    SET @strData =SUBSTRING(@strList,@rowStart,8000)
    INSERT INTO @tempTable (A) VALUES(@strData) 
   END
  END
  ELSE
  BEGIN --列不为空的情况
   IF ( LEN(ISNULL(@rowSplitChar,''))=0 )
   BEGIN
    --一行多列
    SET @colNo=1
    SET @colStart=1
    SET @colEnd= CHARINDEX(@columnSplitChar,@strList,@colStart)
    
    WHILE(@colEnd>0 OR @LastFlag>0 )
    BEGIN
     IF ( @colEnd>0 )
      SET @colData =SUBSTRING(@strList,@colStart,@colEnd-@colStart)
     ELSE
      SET @colData =SUBSTRING(@strList,@colStart,8000)
     IF ( @colNo=1 )
      SET @A=@colData
     ELSE IF ( @colNo=2 )
      SET @B=@colData
     ELSE IF ( @colNo=3 )
      SET @C=@colData
     ELSE IF ( @colNo=4 )
      SET @D=@colData
     ELSE IF ( @colNo=5 )
      SET @E=@colData
     ELSE IF ( @colNo=6 )
      SET @F=@colData
     ELSE IF ( @colNo=7 )
      SET @G=@colData
     ELSE IF ( @colNo=8 )
      SET @H=@colData
     ELSE IF ( @colNo=9 )
      SET @I=@colData
     ELSE IF ( @colNo=10 )
      SET @J=@colData 
     ELSE IF ( @colNo=11 )
      SET @K=@colData
     ELSE IF ( @colNo=12 )
      SET @L=@colData 
     ELSE IF ( @colNo=13 )
      SET @M=@colData
     ELSE IF ( @colNo=14 )
      SET @N=@colData 
     ELSE IF ( @colNo=15 )
      SET @O=@colData 
     
     IF ( @colEnd>0 )
     BEGIN
      SET @colNo=@colNo+1
      SET @colStart=@colEnd+1
      SET @colEnd= CHARINDEX(@columnSplitChar,@strList,@colStart)
     END
     ELSE
     BEGIN
      SET @LastFlag=0
     END
    END 
    INSERT INTO @tempTable VALUES(@A, @B, @C, @D,
           @E, @F, @G, @H,
           @I, @J, @K, @L,
           @M, @N, @O)
   END
   ELSE
   BEGIN
    --多行多列
    SET @rowStart=1
    SET @rowEnd= CHARINDEX(@rowSplitChar,@strList,@rowStart)
    
    WHILE(@rowEnd>0 OR @LastFlag>0)
    BEGIN
     IF ( @rowEnd>0 )
      SET @strData =SUBSTRING(@strList,@rowStart,@rowEnd-@rowStart)
     ELSE
      SET @strData =SUBSTRING(@strList,@rowStart,8000)
     
     --------------获取列开始
     SET @colNo=1
     SET @A =''
     SET @B =''
     SET @C =''
     SET @D =''
     SET @E =''
     SET @F =''
     SET @G =''
     SET @H =''
     SET @I =''
     SET @J =''
     SET @K =''
     SET @L =''
     SET @M =''
     SET @N =''
     SET @O =''
     
     SET @LastFlag2=1
     SET @colStart=1
     SET @colEnd= CHARINDEX(@columnSplitChar,@strData,@colStart)
     
     WHILE(@colEnd>0 OR @LastFlag2>0 )
     BEGIN
      IF ( @colEnd>0 )
       SET @colData =SUBSTRING(@strData,@colStart,@colEnd-@colStart)
      ELSE
       SET @colData =SUBSTRING(@strData,@colStart,8000)
      IF ( @colNo=1 )
       SET @A=@colData
      ELSE IF ( @colNo=2 )
       SET @B=@colData
      ELSE IF ( @colNo=3 )
       SET @C=@colData
      ELSE IF ( @colNo=4 )
       SET @D=@colData
      ELSE IF ( @colNo=5 )
       SET @E=@colData
      ELSE IF ( @colNo=6 )
       SET @F=@colData
      ELSE IF ( @colNo=7 )
       SET @G=@colData
      ELSE IF ( @colNo=8 )
       SET @H=@colData
      ELSE IF ( @colNo=9 )
       SET @I=@colData
      ELSE IF ( @colNo=10 )
       SET @J=@colData 
      ELSE IF ( @colNo=11 )
       SET @K=@colData
      ELSE IF ( @colNo=12 )
       SET @L=@colData 
      ELSE IF ( @colNo=13 )
       SET @M=@colData
      ELSE IF ( @colNo=14 )
       SET @N=@colData 
      ELSE IF ( @colNo=15 )
       SET @O=@colData  
       
      IF ( @colEnd>0 )
      BEGIN
       SET @colNo=@colNo+1
       SET @colStart=@colEnd+1
       SET @colEnd= CHARINDEX(@columnSplitChar,@strData,@colStart)
      END
      ELSE
      BEGIN
       SET @LastFlag2=0
      END
     END 
     INSERT INTO @tempTable VALUES(@A, @B, @C, @D,
            @E, @F, @G, @H,
            @I, @J, @K, @L,
            @M, @N, @O) 
     --------------获取列结束
     IF ( @rowEnd>0 )
     BEGIN
      SET @rowStart=@rowEnd+1
      SET @rowEnd= CHARINDEX(@rowSplitChar,@strList,@rowStart)
     END
     ELSE
     BEGIN
      SET @LastFlag=0
     END
    END
   END
  END
 END
 
 RETURN
END