Search results
1 wrz 2016 · With its 12c release, Oracle has added the functionality to allow the declaration of Pl/SQL functions directly at the top of an SQL statement (see https://oracle-base.com/articles/12c/with-clause-enhancements-12cr1)
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.
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) ----- 1 SQL>
31 sie 2017 · Functions in the WITH clause are defined as: FROM student; . END; . SELECT first_name, last_name . FROM student . WHERE enrolment_date = findLatestEnrolmentDate; . This is a simple example, and you may not need a function for this exact logic.
15 cze 2023 · Use with-clauses to share code within a view or to modularize your query significantly. Or in cases when not using a with-clause makes your query question hard or seemingly impossible to solve.
19 lis 2018 · In this article i will give you the Oracle With Clause information with its examples.
For this article I'm going to take a look at some of the main aspects of the WITH clause, available since 10g, and the enhancements in 11g. 2. SUBQUERY FACTORING – WHY CREATE A TABLE? In its simplest form, the WITH clause can be used to supply a query with some test data.
