SQL依據指定分隔符分化字符串完成步調。本站提示廣大學習愛好者：（SQL依據指定分隔符分化字符串完成步調）文章只能為提供參考，不一定能成為您想要的結果。以下是SQL依據指定分隔符分化字符串完成步調正文
假如有一個字符串 eg: "sun,star,moon,clouds",想要在MS SQL中依據給定的分隔符','把這個字符串分化成各個元素[sun] [star] [moon] [clouds]，若何完成呢？為此，創立一個Function,代碼以下:
CREATE FUNCTION [dbo].[Split_StrByDelimiter](@String VARCHAR(8000), @Delimiter CHAR(1))
RETURNS @temptable TABLE (items VARCHAR(8000))
AS
BEGIN
DECLARE @idx INT
DECLARE @slice VARCHAR(8000)
SELECT @idx = 1
IF len(@String)<1 OR @String IS NULL RETURN
while @idx!= 0
BEGIN
SET @idx = charindex(@Delimiter,@String)
IF @idx!=0
SET @slice = LEFT(@String,@idx - 1)
ELSE
SET @slice = @String
IF(len(@slice)>0)
INSERT INTO @temptable(Items) VALUES(@slice)
SET @String = RIGHT(@String,len(@String) - @idx)
IF len(@String) = 0 break
END
RETURN
END
示例：假如輸出
SELECT * FROM dbo.Split_StrByDelimiter('sun,star,moon,clouds',',')
成果前往
sun
star
moon
clouds
在下面的代碼做變形，前往有若干個元素
CREATE FUNCTION [dbo].[GetCount_Split_StrByDelimiter](@String VARCHAR(8000), @Delimiter CHAR(1))
RETURNS INT
AS
BEGIN
DECLARE @temptable TABLE (items VARCHAR(8000))
DECLARE @SplitCount INT
DECLARE @idx INT
DECLARE @slice VARCHAR(8000)
SELECT @idx = 1
IF len(@String)<1 OR @String IS NULL RETURN 0
while @idx!= 0
BEGIN
SET @idx = charindex(@Delimiter,@String)
IF @idx!=0
SET @slice = LEFT(@String,@idx - 1)
ELSE
SET @slice = @String
IF(len(@slice)>0)
INSERT INTO @temptable(Items) VALUES(@slice)
SET @String = RIGHT(@String,len(@String) - @idx)
IF len(@String) = 0 break
END
SET @SplitCount=(SELECT COUNT(*) FROM @temptable)
RETURN @SplitCount
END
示例
SELECT dbo.GetCount_Split_StrByDelimiter('sun,star,moon,clouds',',')
成果前往
4
