Using MS SQL Server 2014. I need to select the row where (userid=1 or memberid=1) that has the max(messageid) value from all the messages where the user #1 sent or received messages ordered by messageid descUsing MS SQL Server 2014. I need to select the
阅读背景：
选择MAX(列)，并通过MS SQL中的两列之一进行区分
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