6-6. Writing ANSI-Compliant Conversions
Problem
You want to convert strings to dates using an ANSI-compliant methodology.
Solution
Use the CAST function, because it is ANSI-compliant. In this example, a procedure is written that will select each of the rows within the JOB_HISTORY table that fall within a specified date range. The dates will be converted into strings, and other information will be appended to the converted dates. This procedure will produce a simple report to display the JOB_HISTORY.
CREATE OR REPLACE PROCEDURE job_history_rpt(in_start_date IN DATE,
in_end_date IN DATE) AS
CURSOR job_history_cur IS
SELECT CAST(hist.start_date AS VARCHAR2(12)) || ' - ' || CAST(hist.end_date ...Get Oracle and PL/SQL Recipes: A Problem-Solution Approach now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
