Re: SQL statements for physical and logical files -- MIDRANGE-L

Subject: Re: SQL statements for physical and logical files
From: Buck Calabro <kc2hiz@xxxxxxxxx>
Date: Tue, 14 Feb 2017 17:50:22 -0500
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On 2/14/2017 4:59 PM, Charles Wilt wrote:

You can do RLA and alter table at will...

Don't use the table directly. Either go through a DDS logical with an
explicit format (column list) or an SQL index with an explicit column list.

All true. Somewhere though, some RPG program that uses RLA has an I/O
buffer burnt into the object code. And if I want to add a column to the
view or index, I will not be able to unless I can also recompile all the
programs which use that I/O buffer all at the same moment in time.

That environment does not exist with FETCH column, column, column.

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