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Are you saying it is slower to update the same location than to write
somewhere else? That doesn't make since to me.


-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of John
Yeung
Sent: Thursday, February 25, 2021 12:56 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Need some help with SQL case/when performance

On Thu, Feb 25, 2021 at 12:47 PM <smith5646midrange@xxxxxxxxx> wrote:

I don't understand why it would be different.

The SQL is one read to get the data and one write to update the data.
The RPG is one read to get the data and one write to write the data.

There's a potentially huge difference between reading something at one
location and then writing to the same location, versus reading at one
location and writing to another location.

John Y.
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