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mysql mariadb，
之前專案用的是mysql，後來專案遷移到了別的資料庫，同事資料庫安裝是mariadb，而Maria不支援mysql的order by + group by

https://stackoverflow.com/questions/36485072/select-with-order-and-group-by-in-maria-dbmysql

https://www.icode9.com/content-2-568299.html

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草稿，有時間在寫