Message in Chinese (Traditional) (中文（繁體）)
彙總不得出現於 ON 子句，除非進行彙總的子查詢位於 HAVING 子句或選取清單中，且要彙總的資料行是一個外部參考。
Unlocalized message
An aggregate cannot appear in an ON clause unless it is in a subquery contained in a HAVING clause or select list, and the column being aggregated is an outer reference.
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