【mysql】Every derived table must have its own alias

關於這條報錯信息，意思是指每一個派生出來的表都必須有一個本身的別名。 _mysql_exceptions.OperationalError: (1248, 'Every derived table must have its own alias') 以下兩條select語句能夠說明這個問題： select count(*) from (select * from A where uuid='123

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