UNION 查询错误 - “您已尝试执行不包含指定表达式的查询...”

Posted 2023-04-19

【中文标题】UNION 查询错误 - “您已尝试执行不包含指定表达式的查询...”

【英文标题】：UNION Query Error - "You have tried to execute a query that does not inlude the specified expression..."

【发布时间】：2013-12-18 20:14:15

【问题描述】：

我正在尝试通过 UNION 组合多个查询。当我尝试执行时，出现以下错误：

“您尝试执行的查询不包含指定表达式 'DateRec' 作为聚合函数的一部分。”

有什么想法吗？

这是我的查询。

SELECT [Leads Received by Agent].DateRec, [Leads Received by Agent].AgentID, 
    [Leads Received by Agent].AgentFirstName, [Leads Received by Agent].AgentLastName, 
    Count([Leads Received by Agent].LastAction) AS CountOfLastAction, 
    'Leads Received by Agent' as type 
FROM [Leads Received by Agent]

UNION ALL

SELECT [Leads Proposed by Agent].DateRec, [Leads Proposed by Agent].AgentID, 
    [Leads Proposed by Agent].AgentFirstName, [Leads Proposed by Agent].AgentLastName, 
    Count([Leads Proposed by Agent].LastAction) AS NumofLeadsProp, 
    'Leads Proposed by Agent' 
FROM [Leads Proposed by Agent]

ORDER BY [Leads Received by Agent].DateRec;

【问题讨论】：

如果您想要操作计数，您需要按 daterec、agentid、agentfirstname、agentlastname 和 TYPE 分组。在两个工会中。

您需要对两个选择都没有聚合函数的列进行 GROUP BY。

【参考方案1】：

在联合的每一半中添加如下的group by子句，例如...

SELECT [Leads Received by Agent].DateRec, 
       [Leads Received by Agent].AgentID, 
       [Leads Received by Agent].AgentFirstName, 
       [Leads Received by Agent].AgentLastName, 
       Count([Leads Received by Agent].LastAction) AS CountOfLastAction, 
       'Leads Received by Agent' as type 
FROM [Leads Received by Agent]
GROUP BY [Leads Received by Agent].DateRec, 
         [Leads Received by Agent].AgentID, 
         [Leads Received by Agent].AgentFirstName, 
         [Leads Received by Agent].AgentLastName,'Leads Received by Agent' as type 

另外，我不建议将“类型”作为列别名，因为它是 is a reserved word。