连接动态SQL列

我有三张表; tblProducts和tblOption和tblOptionValue。（T-SQL）连接动态SQL列

我得到使用此查询我的产品的所有可能的组合：

DECLARE @ProductId INT, @Query NVARCHAR(MAX), @ProductOptionGroupId INT 
SET @ProductId = 69 
SET @Query = '' 

DECLARE CC CURSOR FOR 
SELECT DISTINCT OptionID 
FROM tblOption 
WHERE ProductId = @ProductId 

OPEN CC 
FETCH NEXT FROM CC INTO @ProductOptionGroupId 
WHILE @@FETCH_STATUS = 0 
BEGIN 
    SET @Query = @Query + '(SELECT DISTINCT tblOptionValue.Name FROM tblOptionValue INNER JOIN tblOption on tblOptionValue.OptionID = tblOption.OptionID WHERE tblOptionValue.OptionId='+CAST(@ProductOptionGroupId AS VARCHAR)+'AND tblOption.ProductId='+CAST(@ProductId AS VARCHAR)+ 
       +') AS Table' + CAST(@ProductOptionGroupId AS VARCHAR)+' CROSS JOIN ' 
    FETCH NEXT FROM CC INTO @ProductOptionGroupId 
END 
CLOSE CC 
DEALLOCATE CC 
SET @Query = 'SELECT * FROM ' + LEFT(@Query,LEN(@Query)-10) 
PRINT @Query 
EXEC sp_executesql @Query

发现here感谢@Lamak 我就适应我的数据库，但我需要：

A）找到一个方法来把所有数据传回在一列中，而不是多列
B）命名tblOptionValue.Name列同相关tblOption.Name场

关于我如何实现上述目标的想法？

非常感谢

更新：我设法实现自己的目标，使用下面的查询：

DECLARE @ProductId INT, @Query NVARCHAR(MAX), @ProductOptionGroupId INT, @cName  VARCHAR(300) 
SET @ProductId = 70 
SET @Query = '' 

DECLARE CC CURSOR FOR 
SELECT DISTINCT OptionID 
FROM tblOption 
WHERE ProductId = @ProductId 

OPEN CC 
FETCH NEXT FROM CC INTO @ProductOptionGroupId 
WHILE @@FETCH_STATUS = 0 
BEGIN 
    set @cName = (SELECT Name FROM tblOption WHERE [email protected]) 
    SET @Query = @Query + '(SELECT DISTINCT tblOptionValue.Name as '[email protected]+' FROM tblOptionValue INNER JOIN tblOption on tblOptionValue.OptionID = tblOption.OptionID INNER JOIN tblProduct on tblOption.ProductID=tblProduct.ProductID WHERE tblOptionValue.OptionId='+CAST(@ProductOptionGroupId AS VARCHAR)+'AND tblOption.ProductId='+CAST(@ProductId AS VARCHAR)+ 
       +') AS Table' + CAST(@ProductOptionGroupId AS VARCHAR)+' CROSS JOIN '  
    FETCH NEXT FROM CC INTO @ProductOptionGroupId 
END 
CLOSE CC 
DEALLOCATE CC 
SET @Query = 'SELECT t2.*, t1.* FROM (SELECT * FROM ' + LEFT(@Query,LEN(@Query)-10) 
SET @Query = @Query + ') as t1, 
(SELECT * FROM tblProduct WHERE ProductID=70) as t2' 

PRINT @Query 
EXEC sp_executesql @Query

来源

2011-06-14 Leigh

我真的没有看到光标的需要。 – ingo 2011-06-14 18:50:10

@ingo感谢您的反馈，我并不完全确定我需要光标。然而，我没有其他想法如何构建我的查询来实现我所需要的。有什么建议么？谢谢 – Leigh 2011-06-15 11:00:28

尝试将其写为“正常”查询。我很乐意从那里帮助你 – ingo 2011-06-15 21:07:30

把用户的溶液进入一个答案。

DECLARE @ProductId INT, @Query NVARCHAR(MAX), @ProductOptionGroupId INT, @cName  VARCHAR(300) 
SET @ProductId = 70 
SET @Query = '' 

DECLARE CC CURSOR FOR 
SELECT DISTINCT OptionID 
FROM tblOption 
WHERE ProductId = @ProductId 

OPEN CC 
FETCH NEXT FROM CC INTO @ProductOptionGroupId 
WHILE @@FETCH_STATUS = 0 
BEGIN 
    set @cName = (SELECT Name FROM tblOption WHERE [email protected]) 
    SET @Query = @Query + '(SELECT DISTINCT tblOptionValue.Name as '[email protected]+' FROM tblOptionValue INNER JOIN tblOption on tblOptionValue.OptionID = tblOption.OptionID INNER JOIN tblProduct on tblOption.ProductID=tblProduct.ProductID WHERE tblOptionValue.OptionId='+CAST(@ProductOptionGroupId AS VARCHAR)+'AND tblOption.ProductId='+CAST(@ProductId AS VARCHAR)+ 
       +') AS Table' + CAST(@ProductOptionGroupId AS VARCHAR)+' CROSS JOIN '  
    FETCH NEXT FROM CC INTO @ProductOptionGroupId 
END 
CLOSE CC 
DEALLOCATE CC 
SET @Query = 'SELECT t2.*, t1.* FROM (SELECT * FROM ' + LEFT(@Query,LEN(@Query)-10) 
SET @Query = @Query + ') as t1, 
(SELECT * FROM tblProduct WHERE ProductID=70) as t2' 

PRINT @Query 
EXEC sp_executesql @Query

来源

2011-07-29 14:31:10 Keng

+1看起来像是一个很好的解决方案 – 2011-08-03 18:10:22

连接动态SQL列

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