Every derived table must have its own alias(sql语句错误解决方法)

1. 在作多表查询,或者查询的时候产生新的表的时候会出现这个错误:Every derived table must have its own alias(每个派生出来的表都必须有一个本身的别名)。mysql eg:sql delete from stock where (org_id,material_id,state) in (SELECT * from (select org_id
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