You can always convert a nested query into an equivalent join.

您始终可以将嵌套查询转换成等价的连接。

youdao

The structure of SQL-like nested queries is examined. It is shown that any SQL- like nested query can be decomposed into four basic nested types.

本文分析了SQL类查询语句的基本结构，指出任何一个嵌套结构的SQL类语句都可以由四种基本嵌套类型组成。

youdao

You can drill down multiple levels in a query to specify nested predicates, clauses, and expressions.

您可以在一个查询中钻取多层，以指定嵌套的谓词、子句和表达式。

youdao