加入到表值函數失敗

Question

我遇到了一個失敗的表值函數的連接，我無法解釋它。我在下面創建了一個測試腳本，我在SQL Server 2008 R2上運行這個腳本

任何人都可以理解爲什麼在測試腳本結束時第一個SELECT語句有效，第二個語句不起作用？

CREATE TABLE dbo.Test (Setting INT NOT NULL, Value NVARCHAR(MAX) NULL) 

GO 

INSERT dbo.Test (Setting, Value) 
SELECT 3151, '2~-10011;2~-10012' 

GO 

CREATE FUNCTION [dbo].[CTESplitChunk] (@list nvarchar(MAX), 
           @delim nchar(1) = ',') 
RETURNS @t TABLE (str nvarchar(4000) NOT NULL) AS 
BEGIN 
    DECLARE @slice nvarchar(4000), 
      @textpos int, 
      @maxlen int, 
      @stoppos int, 
      @lastone bit 

    SELECT @textpos = 1, @maxlen = 4000 - 2, @lastone = 0 
    WHILE @lastone = 0 
    BEGIN 
     IF datalength(@list)/2 - (@textpos - 1) >= @maxlen 
     BEGIN 
     SELECT @slice = substring(@list, @textpos, @maxlen) 
     SELECT @stoppos = @maxlen - 
          charindex(@delim COLLATE Slovenian_BIN2, reverse(@slice)) 
     SELECT @slice = left(@slice, @stoppos) + @delim 
     SELECT @textpos = @textpos - 1 + @stoppos + 2 -- On the other side of the comma. 
     END 
     ELSE 
     SELECT @slice = substring(@list, @textpos, @maxlen) + @delim, 
       @lastone = 1 

     ;WITH csvtbl(start, stop) AS (
     SELECT start = 1, 
       stop = charindex(@delim COLLATE Slovenian_BIN2, @slice) 
     UNION ALL 
     SELECT start = stop + 1, 
       stop = charindex(@delim COLLATE Slovenian_BIN2, 
            @slice, stop + 1) 
     FROM csvtbl 
     WHERE stop > 0 
    ) 
     INSERT @t (str) 
     SELECT ltrim(rtrim(
       substring(@slice, start, 
          CASE WHEN stop > 0 THEN stop - start ELSE 0 END))) 
     FROM csvtbl 
     WHERE stop > 0 
     OPTION (MAXRECURSION 0) 
    END 

    RETURN 
END 

GO 

SELECT   Value 
FROM   dbo.Test t 
WHERE   t.Setting = '3151' 

GO 

SELECT   Value 
FROM   dbo.Test t 
    INNER JOIN dbo.CTESplitChunk (t.Value, ';') s ON 1 = 1 
WHERE   t.Setting = '3151' 

Answer 1

您需要CROSS APPLY以相關參數調用TVF。

SELECT t.Value, 
     s.* 
FROM dbo.Test t 
     CROSS APPLY dbo.CTESplitChunk (t.Value, ';') s 
WHERE t.Setting = '3151'