RE: Is there a way to step through an SQL from Run SQL Scripts on PC -- MIDRANGE-L

Thanks everyone. I was hoping for something to help with the review but I'll do the manual process. Unfortunately the visual explain view of this query looks like a 100 year old oak tree, a whole lot of branches!!!

Respectfully,
Kendall Kinnear
System Analyst
Standard Motor Products, Inc.
Work: 972-316-8169
Mobile: 940-293-7541

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Mark Murphy
Sent: Tuesday, September 25, 2018 12:39 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: Is there a way to step through an SQL from Run SQL Scripts on PC

It sounds like you are asking for a visual debug got SQL, but really SQL doesn't work that way. It performs the whole query in one atomic bite, not exactly, but the steps aren't laid out in the SQL, as others have mentioned, you can look ate the visual explain to see what it is doing, but not what each step returns.

The way I go through an SQL looking for problems is to comment out everything but one table, and the clauses that reference it. then one by one, I add tables and associated references until I see just what it is that is causing the problem.

On Tue, Sep 25, 2018 at 1:20 PM, Luis Rodriguez <luisro58@xxxxxxxxx> wrote:

Kendall,

Run your script using ACS's RUN SQL and select the Visual Explain option.
It can show you what the Db2 engine is doing and give you suggestions
for optimizing your data access (eg. create an index9.

Regards,

Luis Rodriguez

--

On Tue, 25 Sep 2018 at 13:14, Kendall Kinnear
<Kendall.Kinnear@xxxxxxxxxxx

wrote:

I have a Business Intelligence developer who has created a SQL query
that is acting weird. When they run it against production it takes a
few

seconds

and works perfectly. When he changes the SQL to use a copy of one
table

in

another library the SQL runs forever and has to be canceled. I'm
trying

to

figure out where it is going haywire but I'm not seeing anything.

I'd really like to step through the SQL somehow and see what is what
is happening. Is that an option somehow?

Any suggestions?

Respectfully,
Kendall Kinnear
System Analyst
Standard Motor Products, Inc.
Work: 972-316-8169
Mobile: 940-293-7541
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