sql-server - 使用 SQL Server 2012 将 csv 值插入多行无法以所需方式工作

Question

Insert Into MessagingMessageReceipient
      (
       MessageId,
       ReceipientId,
       ReceipientType
      )
      SELECT
       @pEMailId,
       csv.Part,   -- each @pReceiver
       1
      FROM 
      dbo.inline_split_me(',',@pReceivers) csv

情况1：

如果@pReceiver包含 -- “a”，仅

然后上面的存储过程导致插入两行（一个带有'a'，另一个带有空白）

案例2。

while if@pReceiver包含 -- 仅 "a"

然后上面的存储过程导致插入零行

案例3。

@pReceiver仅当包含 - “a，b”类型的值时，它才能正常工作

如何使它在所有类型的输入中都能正常工作

功能

CREATE FUNCTION inline_split_me (@SplitOn char(1),@String varchar(7998))
RETURNS TABLE AS
RETURN (WITH SplitSting AS
           (SELECT
                LEFT(@String,CHARINDEX(@SplitOn,@String)-1) AS Part
                    ,RIGHT(@String,LEN(@String)-CHARINDEX(@SplitOn,@String)) AS Remainder
                WHERE @String IS NOT NULL AND CHARINDEX(@SplitOn,@String)>0
            UNION ALL
            SELECT
                LEFT(Remainder,CHARINDEX(@SplitOn,Remainder)-1)
                    ,RIGHT(Remainder,LEN(Remainder)-CHARINDEX(@SplitOn,Remainder))
                FROM SplitSting
                WHERE Remainder IS NOT NULL AND CHARINDEX(@SplitOn,Remainder)>0
            UNION ALL
            SELECT
                Remainder,null
                FROM SplitSting
                WHERE Remainder IS NOT NULL AND CHARINDEX(@SplitOn,Remainder)=0
           )
           SELECT Part FROM SplitSting
       )

我正在使用 SQL Server 2012

Answer 1

Alter FUNCTION inline_split_me (@SplitOn char(1),@String varchar(7998))
RETURNS TABLE AS
RETURN (WITH SplitSting AS
           (SELECT
                LEFT(@String,CHARINDEX(@SplitOn,@String)-1) AS Part
                    ,RIGHT(@String,LEN(@String)-CHARINDEX(@SplitOn,@String)) AS Remainder
                WHERE @String IS NOT NULL AND CHARINDEX(@SplitOn,@String)>0
            UNION ALL
            SELECT
                LEFT(Remainder,CHARINDEX(@SplitOn,Remainder)-1)
                    ,RIGHT(Remainder,LEN(Remainder)-CHARINDEX(@SplitOn,Remainder))
                FROM SplitSting
                WHERE Remainder IS NOT NULL AND CHARINDEX(@SplitOn,Remainder)>0
            UNION ALL
            SELECT
                Remainder,null
                FROM SplitSting
                WHERE Remainder IS NOT NULL AND CHARINDEX(@SplitOn,Remainder)=0
           )
           SELECT Part FROM SplitSting where LEN(Rtrim(Coalesce(Part,''))) >0
       )