我有以下情况:
表和列(数据库类型:Microsoft Sql Server 2005):
那么,我如何只选择条目如何包含多个属性,如下面的SQL语句(该语句不适用于 AND 链接):
SELECT *
FROM [Entries] AS [t0]
INNER JOIN [EntryAttributes] AS [t1] ON [t0].[EntryID] = [t1].[EntryID]
WHERE ([t1].[AttributeID] = 1) AND ([t1].[AttributeID] = 1)
如何构建正确的SQL语句?我敢肯定,某处已有解决方案,但我不知道应该使用哪些关键字来搜索该问题。
我使用'Linq to Entites',所以也许有一个简单的Linq表达式。
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祝你好运!
答案 0 :(得分:0)
此场景的解决方案是为我选择的每个[AttributeID]加入:
SELECT *
FROM [Entries] AS [t0]
INNER JOIN [EntryAttributes] AS [t1] ON [t0].[EntryID] = [t1].[EntryID]
INNER JOIN [EntryAttributes] AS [t2] ON [t0].[EntryID] = [t2].[EntryID]
WHERE ([t1].[AttributeID] = 1) AND ([t2].[AttributeID] = 2)