Every derived table must have its own alias(sql語句錯誤解決方法)

1. 在作多表查詢,或者查詢的時候產生新的表的時候會出現這個錯誤:Every derived table must have its own alias(每個派生出來的表都必須有一個本身的別名)。mysql eg:sql delete from stock where (org_id,material_id,state) in (SELECT * from (select org_id
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