逗号分隔的字符串到SQL Server中的表的列中 [英] Comma-separated String into Table's Column in SQL Server

问题描述

我使用SQL Server，我已经成功地将表的行转换为逗号分隔的值，现在我想将逗号分隔的值的字符串转换回表的行。

I am working with SQL Server, I have successfully converted a table's rows into comma-separated values, now I want to convert that string of comma-separated values back to table's rows.

我有这个字符串（ Varchar ）

DECLARE @str AS varchar(Max)
SET @str = '0.00,0.00,1576.95,0.00,4105.88,1017.87,0.00,6700.70'

我想将这些值转换成行。

I want these values into rows.

喜欢

0.00
0.00
1576
...

推荐答案

创建函数：

CREATE FUNCTION [dbo].[Split](@String nvarchar(4000), @Delimiter char(1))
RETURNS @Results TABLE (Items nvarchar(4000))
AS
BEGIN
    DECLARE @Index INT
    DECLARE @Slice nvarchar(4000)
    -- HAVE TO SET TO 1 SO IT DOESN’T EQUAL ZERO FIRST TIME IN LOOP
    SELECT @Index = 1
    WHILE @Index !=0
        BEGIN
            SELECT @Index = CHARINDEX(@Delimiter,@String) --Getting the indexof the first Occurrence of the delimiter

            -- Saving everything to the left of the delimiter to the variable SLICE
            IF @Index !=0
                SELECT @Slice = LEFT(@String,@Index - 1)
            ELSE
                SELECT @Slice = @String

            -- Inserting the value of Slice into the Results SET
            INSERT INTO @Results(Items) VALUES(@Slice)

            --Remove the Slice value from Main String
            SELECT @String = RIGHT(@String,LEN(@String) - @Index)

            -- Break if Main String is empty
            IF LEN(@String) = 0 BREAK
        END
    RETURN
END

传递字符串 @str 和分隔符（，）。

Pass the string @str and the delimiter (,) to the function.

SELECT Items FROM [dbo].[Split] (@str, ',')

作为表：

Items

0.00
0.00
1576.95
0.00
4105.88
1017.87
0.00
6700.70

请参阅 SQL Fiddle

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