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29 paź 2013 · WITH abc AS( select ......) WITH XYZ AS(select ....) /*This one uses "abc" multiple times*/. Select .... /*using XYZ multiple times*/. I can make the query work by repeating the same query multiple times, but do not want to do that, and leverage "WITH AS".
The WITH clause, or subquery factoring clause, is part of the SQL-99 standard and was added into the Oracle SQL syntax in Oracle 9.2. The WITH clause may be processed as an inline view or resolved as a temporary table.
11 wrz 2024 · The PL/SQL WITH clause is a powerful feature that enhances the readability and performance of your SQL queries. It allows you to define temporary result sets, which can be referenced multiple times within a single query. This feature is particularly useful for simplifying complex queries and improving performance, especially in scenarios where ...
The WITH clause in Oracle PL/SQL is a valuable tool for simplifying and organizing complex SQL queries. It enhances code readability, promotes reusability, and supports recursive queries for handling hierarchical data structures.
Is there a way to execute multiple operations using the WITH statement? Something like WITH T AS ( SELECT * FROM Tbl ) BEGIN OPEN P_OUTCURSOR FOR SELECT * FROM T; SELECT COUNT(*) INTO P_OUTCOUNT FROM T; END;
Functions in the WITH Clause. The declaration section of the WITH clause can be used to define PL/SQL functions, as shown below. WITH. FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS. BEGIN. RETURN p_id; END; SELECT with_function(id) FROM t1. WHERE rownum = 1. / WITH_FUNCTION(ID)
Recursive Subquery Factoring : Hierarchical Queries Using Recursive WITH Clauses. This articles gives an overview of how to query hierarchical data in Oracle databases using recursive subquery factoring.
