复制代码 代码如下:
CREATE FUNCTION fGetStrBySplit
(
@Source VARCHAR(max),
@Index INT,
@SplitChar VARCHAR(1)
)
RETURNS varchar(MAX)
AS
BEGIN
DECLARE @Len INT
DECLARE @n INT = 0
DECLARE @ChIndex INT
DECLARE @Result VARCHAR(MAX)
–获取总长度
SET @Len = LEN(@Source)
–获取切割字符位置
SET @ChIndex = CHARINDEX(@SplitChar,@Source)
WHILE @ChIndex > 0
BEGIN
IF(@n = @Index)
BEGIN
SET @Source = SUBSTRING(@Source,0,@ChIndex)
BREAK
END
SET @Source = SUBSTRING(@Source,@ChIndex+1,@Len)
SET @ChIndex = CHARINDEX(@SplitChar,@Source)
SET @Len = LEN(@Source)
SET @n = @n + 1
END
RETURN @Source
END
GO
–调用
DECLARE @value VARCHAR(max)
SET @value = dbo.fGetStrBySplit(‘645002*01_45854_183677_12′,0,’_’)
PRINT @value
结果：
645002*01
–1
45854
–2
183677
原创文章，作者：kirin，如若转载，请注明出处：https://blog.ytso.com/tech/database/234227.html