Question

我创建查询以将我的商品存入我的数据库，如下所示

SELECT  
    Goods.GoodsID ,Max(Price)
    ExistNumber AS ExistNumber ,
    (SELECT p.ValueText
     FROM STR.GoodsProperties gp
     INNER JOIN PRP.Properties p ON p.PropertyID = gp.PropertyID
     WHERE NodeText LIKE '/40/%'
       AND gp.GoodsID = Goods.GoodsID) AS Color
FROM    
    STR.Goods
GROUP BY 
    Goods.GoodsID, ExistNumber;

此查询获取商品的existnumber商品颜色属性，现在，当我运行此查询时，我收到此错误：

Msg 512，Level 16，State 1，Line 13
子查询返回的值超过1。当子查询遵循=，！=，＆lt;，＆lt; =，＆gt;，＆gt; =或子查询用作表达式时，不允许这样做。

导致此错误，因为在某些商品中有两个Color，我想为此商品获取两行

Answer 1

请检查此查询

SELECT  Goods.GoodsID ,
        ExistNumber AS ExistNumber ,
        Prop.ValueText AS Color
FROM    STR.Goods
        INNER JOIN ( SELECT gp.GoodsID ,
                            p.ValueText
                     FROM   STR.GoodsProperties gp
                            INNER JOIN PRP.Properties p ON p.PropertyID = gp.PropertyID
                     WHERE  NodeText LIKE '/40/%'
                   ) Prop ON Prop.GoodsID = Goods.GoodsID
GROUP BY Goods.GoodsID ,
        ExistNumber ,
        Prop.ValueText;

SQL Server-选择另一个选择获取错误

1 个答案: