RE: SQL dates and numeric columns

Or, consider a UDF for the conversions in lieu of the joins. Your SQL statement will be a lot cleaner.

Roger Harman
COMMON Certified Application Developer - ILE RPG on IBM i on Power

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Alan Campin
Sent: Friday, September 1, 2023 11:21 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: SQL dates and numeric columns

As I have previously recommended create a table using DDL with fields for
Date data type, date in ccyymmdd, numeric cyymmdd, mmddyy, mmddccyy and one
for century number, year number, month number and day number. Then write a
quick and dirty program to accept a range of dates to write.

Make sure you use DDL for high speed indexes. create the indexes when
creating the table.

Now you need a date converted just join to table and get converted to any
other format.

If you do with math SQL cannot optimize.

If you need example of table I can create one for you. Just let me know.

On Fri, Sep 1, 2023, 1:41 AM Dave <dfx1@xxxxxxxxxxxxxx> wrote:

Hi,



Trying to do date operations on a physical file where the date is coded in
3 different numeric fields Y, M and D



1 - I created a view, can I do better than this :

date(trim(char(Y))!!'-'!!trim(char(M))!!'-'!!trim(char(D))) "MyDate"

?


2 - This works in an SQL session but the RPG compiler doesn't seem to like
the ' !' character. Any ideas ?



Thanks
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