home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!uknet!edcastle!spider!raft.spider.co.uk!ivan
- From: ivan@spider.co.uk (Ivan Reid)
- Newsgroups: comp.databases.informix
- Subject: FOR loop in ACE - bug?
- Keywords: report
- Message-ID: <1992Sep9.104715.4047@spider.co.uk>
- Date: 9 Sep 92 10:47:15 GMT
- Followup-To: comp.databases.informix
- Organization: Spider Systems Limited, Edinburgh, UK.
- Lines: 52
-
- Hi folks! I've come across a very annoying bug in Informix's report
- writer. Have any of you had similar experiences, and what was your
- workaround? Mine was to split the report into two and link them using
- a shell-script. Not very satisfactory, since it takes twice as long,
- and still approaches the size/complexity limit for ACE. Anyway, here's
- the scenario:
-
- {Extract of report to perform repeated summations of columns for a period}
-
- VARIABLE mx integer {month}
- VARIABLE yx integer {year}
- VARIABLE sm integer {start month}
- VARIABLE em integer {end month}
- ...
- LET sm=4
- LET em=12
- ...
- ON LAST ROW
- FOR yx = 1992 TO 1993
- DO BEGIN
- IF yx=1993 THEN BEGIN {yes, I know this is logically a bit messy ...}
- LET sm=1
- LET em=3
- END
-
- FOR mx = sm TO em
- DO BEGIN {A}
- LET totalA = GROUP TOTAL OF columname
- WHERE month=mx AND year=yx
- ... <lots of code> ...
- PRINT .....
- END {B}
- END
-
- The FOR loop control values work and are PRINTed ok, but the GROUP
- TOTALs don't work as they should. The columns "month" and "year" are
- both integer types, so match those of "mx" and "yx". My only recourse
- was to scrap the FOR loops and duplicate the large chunks of code
- between {A} and {B} (12 times!), substituting the appropriate values
- for mx and my. This meant that the report exceeded ACE's
- size/complexity limit, and had to be coded as two reports, reporting
- to separate files, ultimately linked by a shell-script.
-
- FOR loops in ACE are claimed by the manual to be valid, and I can't
- see any errors in the code above (types,syntax etc..). I am very
- annoyed with INFORMIX! The only potentially mitigating factor is that
- we've got an old release of INFORMIX. But even then ....! Grrrr!
- --
- Ivan Hans Mark Reid Management Information Systems Analyst
- "Information is Power ..." Spider Systems Ltd
- vox: (+44 31) 554 9424 Spider Park, Stanwell St
- fax: (+44 31) 554 0649 Edinburgh EH6 5NG, SCOTLAND
-