AS400 Obtain sql from query definition

Posted on 2009-05-04
Last Modified: 2013-12-06
On the AS400 you can issue the command "WRKQRY" and work with query definitions.  I have a lot of existing query definitions.  How can I quickly obtain or generate the equivalent sql for each query?  That is, as far as selecting, grouping, sequencing records goes, how can I quickly get the sql statement that will produce the same output?

Thank you!
Question by:richard_crist
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 18

Expert Comment

by:Dave Ford
ID: 24297618

If memory serves, you can load WrkQry objects into WrkQMQry and export the corresponding SQL.

Try doing "11=Create from source" in WrkQMQry.

I haven't done that in a long time, but I know it was possible. Try it out.

HTH, DaveSlash
LVL 35

Expert Comment

by:Gary Patterson
ID: 24297664
RTVQMQRY command.  It looks wrong, but it does the job.  Specify the QRYDFN object on the QMQRY parm, and specify ALWQRYDFN(*YES).

- Gary Patterson

Author Comment

ID: 24297757
Thank you, Dave, for your answer earlier today to my other question.

After searching some more I found the question below here at EE.

Gary, does the CL shown there look like what you are preposing?  What do you think about it?

Thank you both for your help.   :)

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

LVL 35

Expert Comment

by:Gary Patterson
ID: 24297861
If you want to rip through a lib (or set of libs) and cranks out SQL for each *QRYDFN object, this looks like it'll do it.  The only catch is if there is a *QMQRY object with the same name as the *QRYDFN in the same lib.  If that happens, then you will get the SQL from the QMQRY and the QRYDFN will be ignored.

If that happens in your system, I'd just move or copy the *QRYDFNs to a different lib and run the process over them there.

- Gary Patterson

Author Comment

ID: 24297867
Thank you!  I will test the CL and respond with my results.


Author Comment

ID: 24299376
I have built and run the CL below and it works great.  I now have a set of text files representing the SQL for each query on my system.  This allows me to search the queries as SQL text files and find ones that already do what I need instead of reinventing the wheel.

When you have time please check the CL below and let me know what you think.

Thank you!

/* BUILD QUERY REFERENCES FILE                                       */
/*                                                                   */
/*  Generate SQL source text for queries                             */
/*                                                                   */
/* REVISION HISTORY:                                                 */
/* 4/4/2009 Richard Crist - Created based on information found on    */
/*                          internet                                 */
/*                                                                   */
             DCLF       FILE(QADSPOBJ)
/* Clear physical file that will receive list of all query defs      */
             MONMSG     MSGID(CPF0000)
/* Produce output file of all query definitions in all user          */
/* libraries                                                         */
             DSPOBJD    OBJ(*all/*all) OBJTYPE(*QRYDFN) +
                          OUTPUT(*OUTFILE) OUTFILE(RCRIST/QRYLIST)
/* For each query in list (outfile), retrieve definition as Query    */
/* Mgmt query source                                                 */
/* Receive one line of input from the file containing list of queries*/
             MONMSG     MSGID(CPF0864) EXEC(DO)
                GOTO ENDLOOP
/* create physical file for the current query library; monmsg so that*/
/* we keep going if it already exists                                */
             MONMSG     MSGID(CPF0000)
/* use Retrieve Query Manager Query to generate the sql for the      */
/* current query                                                     */
/* get next line from input file                                     */
             GOTO LOOP1
             DLTOVR     FILE(*ALL)

LVL 35

Accepted Solution

Gary Patterson earned 400 total points
ID: 24299757
Sure looks good to to me.  Of course, my word isn't nearly as good as thorough testing.  One note:  As a standard, I create temp files like this in QTEMP so they get cleaned up automatically when the job ends.

- Gary Patterson
LVL 27

Assisted Solution

tliotta earned 100 total points
ID: 24300558
At first glance, the CL looks fine.

The only change I'd make (after Gary's) would be to wrap the CRTSRCPF/MONMSG pair in an IF/DO-statement so that they're only executed when &ODLBNM actually changes. But that shouldn't change actual results -- it'll merely reduce the number of error messages that will otherwise clutter the joblog.

As Gary noted, the real test will be in the 'testing'.


Author Closing Comment

ID: 31580508
Sorry about the late response. Thank you both for your help. I gave some points to tliotta for the suggestion about the IF/DO statement.  Thank you, Gary, for your reminding me about RTVQMQRY. Also, I will use QTEMP for auto cleanup as you suggested.

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I don't know if many of you have made the great mistake of using the Cisco Thin Client model with the management software VXC. If you have then you are probably more then familiar with the incredibly clunky interface, the numerous work arounds, and …
In this article we will discuss all things related to StageFright bug, the most vulnerable bug of android devices.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.
Suggested Courses

615 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question