进一步改造目标2: 可自定义连接符,而不局限只能是逗号(“,”)。
引用金蝶K3的行转列函数,功能更强,可以不限逗号;
/******************************************************************************
* Function Name: fn_SplitStringToTable
* Description: 拆分一个字符串 *
******************************************************************************/
ALTER FUNCTION fn_SplitStringToTable
(
@InputString VARCHAR(8000),
@Delimeter CHAR(1)
)
RETURNS @Table TABLE
(
FSequence INT IDENTITY(1, 1),
FValue VARCHAR(511),
FPosition INT,
FLength INT
)
BEGIN
DECLARE @Position INT
SELECT @Position = 1
IF RIGHT(@InputString, LEN(@Delimeter)) <> @Delimeter
SET @InputString = @InputString + @Delimeter
WHILE SUBSTRING(@InputString, @Position, 1) = CHAR(10) OR
SUBSTRING(@InputString, @Position, 1) = CHAR(13)
BEGIN
SELECT @Position = @Position + 1
END
WHILE @Position <= CHARINDEX(@Delimeter, @InputString, @Position)
BEGIN
INSERT INTO @Table(FValue, FPosition, FLength)
VALUES (RTRIM(LTRIM(SUBSTRING(@InputString,
@Position,
CHARINDEX(@Delimeter,
@InputString,
@Position) - @Position))), @Position, CHARINDEX(@Delimeter, @InputString, @Position) - @Position)
SELECT @Position = CHARINDEX(@Delimeter, @InputString, @Position) + 1
WHILE SUBSTRING(@InputString, @Position, 1) = CHAR(10) OR
SUBSTRING(@InputString, @Position, 1) = CHAR(13)
BEGIN
SELECT @Position = @Position + 1
END
END
RETURN
END
GO
--测试
select * FROM dbo.fn_SplitStringToTable('SSSSSS,ASDF-ASDFASDF','-')