SQLSERVER字符串分割转表格函数

第一种方式普通循环取值

CREATE FUNCTION [dbo].[f_split]
       (
         @string VARCHAR(MAX) ,
         @separator CHAR
       )
RETURNS @return TABLE ( value VARCHAR(200) )
AS
BEGIN
    DECLARE @len INT;
    SET @len = LEN(@string);
    IF ( SUBSTRING(@string, @len, 1) <> @separator )
       SET @string = @string + @separator; 
    DECLARE @strtemp VARCHAR(200);
    DECLARE @index1 INT;
    DECLARE @index2 INT;
    SET @index1 = 0;
    SET @index2 = CHARINDEX(@separator, @string, 1);

    WHILE @index2 <> 0
          BEGIN
                SET @strtemp = SUBSTRING(@string, @index1 + 1,
                                         @index2 - @index1 - 1);
                INSERT  @return
                        ( [value] )
                VALUES  ( @strtemp );
                SET @index1 = @index2;
                SET @index2 = CHARINDEX(@separator, @string, @index1 + 1);
          END;
    RETURN;
END;

 

第二种方式借助中间表

CREATE FUNCTION [dbo].[f_split]
       (
         @string VARCHAR(MAX) ,
         @separator CHAR
       )
RETURNS @return TABLE ( value VARCHAR(200) )
AS
BEGIN
    INSERT  INTO @return
            SELECT  SUBSTRING(@string, b.number,
                              CHARINDEX(@separator, @string + @separator,
                                        b.number) - b.number)
            FROM    master..spt_values b
            WHERE   CHARINDEX(@separator, @separator + @string, b.number) = b.number
                    AND b.type = 'P';
    RETURN;
END;