Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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A query is an operation that retrieves data from one or more tables or views. In this reference, a top-level SELECT
statement is called a query, and a query nested within another SQL statement is called a subquery.
This section describes some types of queries and subqueries and how to use them. The top level of the syntax is shown in this chapter. Please refer to SELECT for the full syntax of all the clauses and the semantics of this statement.
select::=
subquery::=