group by 表达式只能包含可由服务器进行比较的非常量标量。包含类型“<var>Type Name</var>”的表达式不可比较。

Message in Chinese (Simplified) (中文(简体))

Unlocalized message

A group by expression can only contain non-constant scalars that are comparable by the server. The expression with type '<var>Type Name</var>' is not comparable.

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