This implies that a subquery SELECT statement can stand alone, and it does not depend on the statement in which it is nested.
这说明子查询SELECT语句可以单独存在，并不依赖于主查询语句。
This implies that a subquery SELECT statement can stand alone, and it does not depend on the statement in which it is nested.
这说明子查询SELECT语句可以单独存在，并不依赖于主查询语句。
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