我知道它有点重，但它会工作

I know its a bit heavy but it will work

Declare @str1 varchar(max) = 'A1,A2,A3'
Declare @str2 varchar(max) = 'B1,B2,B3'
Declare @str3 varchar(max) = 'C1,C2,C3'

DECLARE @RowCount TINYINT
DECLARE @i        TINYINT = 0

DECLARE @Table AS TABLE

(
 colA  varchar(MAX)
,ColB varchar(MAX)
,ColC varchar(MAX)

)

SET @RowCount =  len(@str1) - len(replace(@str1, ',', ''))

WHILE(@i<=@RowCount)
BEGIN
    INSERT INTO @Table
    SELECT  LEFT(@str1,CHARINDEX(',',@str1+',',0)-1) AS colA
           ,LEFT(@str2,CHARINDEX(',',@str2+',',0)-1) AS colB
           ,LEFT(@str3,CHARINDEX(',',@str3+',',0)-1) AS colC

    SET @str1 = STUFF(@str1,1,CHARINDEX(',',@str1,0),'')
    SET @str2 = STUFF(@str2,1,CHARINDEX(',',@str2,0),'')
    SET @str3 = STUFF(@str3,1,CHARINDEX(',',@str3,0),'')

    SET @i = @i + 1

END

SELECT * FROM @Table