TechTalk: Forcing a query to use the library list.

General
Typography
  • Smaller Small Medium Big Bigger
  • Default Helvetica Segoe Georgia Times

One of the problems with running a query from within a CL program is that, by default, queries don't use the library list to find the file they were designed to access. When the query is defined, the name of the library for the file is essentially hard coded into the query. One way to get around this problem is to use the QRYFILE parameter of the RUNQRY command. Here, you can specify the name of the original file and *LIBL for the library name.

For example, suppose you have a query called HISTQRY that was designed to read file ITEMHIST in library PRODLIB. You can force the query to read the first occurrence of the ITEMHIST file in your library list by placing the following command into your CL program:

 RUNQRY QRY(HISTQRY) + QRYFILE((*LIBL/ITEMHIST)) 

In this example, if another copy of the ITEMHIST file was in a library called TESTLIB that was higher in the library list than PRODLIB, then the query would read the file from TESTLIB. If you then removed TESTLIB from your library list, the query would read the file in PRODLIB. This technique gives your queries more flexibility by forcing them to use the library list to locate the files they were designed to read.

- Blair Hamren

BLOG COMMENTS POWERED BY DISQUS

LATEST COMMENTS

Support MC Press Online

$

Book Reviews

Resource Center

  •  

  • LANSA Business users want new applications now. Market and regulatory pressures require faster application updates and delivery into production. Your IBM i developers may be approaching retirement, and you see no sure way to fill their positions with experienced developers. In addition, you may be caught between maintaining your existing applications and the uncertainty of moving to something new.

  • The MC Resource Centers bring you the widest selection of white papers, trial software, and on-demand webcasts for you to choose from. >> Review the list of White Papers, Trial Software or On-Demand Webcast at the MC Press Resource Center. >> Add the items to yru Cart and complet he checkout process and submit

  • SB Profound WC 5536Join us for this hour-long webcast that will explore:

  • Fortra IT managers hoping to find new IBM i talent are discovering that the pool of experienced RPG programmers and operators or administrators with intimate knowledge of the operating system and the applications that run on it is small. This begs the question: How will you manage the platform that supports such a big part of your business? This guide offers strategies and software suggestions to help you plan IT staffing and resources and smooth the transition after your AS/400 talent retires. Read on to learn: