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Re: InstantDB: SQL query does not run


Thomas

Could you zip up the database and send it to me (only if it zips to under
400K though). I'll try out the query and see if I can figure out what's
going on. Email is peter.hearty@lutris.com.

Regards

Peter Hearty
Lutris Technologies UK Ltd.
-----Original Message-----
From: Thomas Vatter <thomas.vatter@blinx.de>
To: instantDB@enhydra.org <instantDB@enhydra.org>
Date: 04 July 2000 08:49
Subject: Re: InstantDB: SQL query does not run


>Hi Bregitte,
>
>yes, I have other queries that work pretty well. And, there is a query that
shows
>the complete join for one single data set as a form sheet. This works,
though a
>bit slower than with other dbms. I am using instantdb313 on nt40 sp4. The
>problematic query is the one that shows all data in a swing table as a
complete
>join. This works with 15 rows but not with around 100 rows in the resulting
>table. No, I can't go on in the application with another query after the
bad
>query is startet. CPU usage is 100% then and application windows are not
painted
>completely. But I can start dbinstant JDBCmain in parallel and perform
simple
>queries there. One thing is interesting: If data are stored with redundant
>records in each table, that means 100 records in each table, though many of
them
>are the same, the query works. If data are stored without redundancy, often
>referencing the same record of a table, the query hangs. Code should
(really hope
>so) be ok because the network version is already deployed for an informix
server.
>
>Thomas
>
>Bregitte Pracht schrieb:
>
>> Hello Thomas (and PeterH),
>>
>> This sounds like a similar problem I'm experiencing on the
>> AIX platform. For a *specific* SQL statement, the
>> program just "hangs"; it is able to proceed with all else.
>>
>> Is your program able to proceed with any other SQL statement?
>> Is it "unhappy" with "just" the select statement below?
>> What IDB release and platform are you working on?
>>
>> Bregitte
>>
>> Thomas Vatter wrote:
>> >
>> > I have an sql select statement that does not run. No results are
>> > returned, further exection of the program is stopped. After
>> > "executeQuery()" , instantdb shows the query statement, and shows no
>> > exceptions. Here is the query
>> >
>> > Select
>> >
>> >      eintr.eintrn, stf.nme_praefix, stf.bzc, mng.wrt, mng.enh,
>> >      knz.wrt, knz.enh, stf.agg, gfh.kb1,
>> >      gfh.kb2, gfh.kb3, rstkmb.rst1, rstkmb.rst2, rstkmb.rst3,
>> >      rstkmb.rst4, stf.bgk, stf.wgk,
>> >      gbd.bzc, stc.bzc, rm.bzc, fchabt.bzc, ins.bzc, arb.bzc,
>> >      brb.vrn, brb.nch, eintr.doe, vrnt.vrn, vrnt.nch
>> >
>> > from
>> >
>> >      eintr, stf, mng, knz, gfh, rstkmb, gbd, stc, rm, fchabt,
>> >      ins, arb, brb, vrnt
>> >
>> > where
>> >
>> >      dor is null and doa is null and unme <> "zxy" and
>> >      eintr.stfn = stf.stfn and
>> >      eintr.brbn = brb.brbn and
>> >      eintr.fchabtn = fchabt.fchabtn and
>> >      eintr.gbdn = gbd.gbdn and
>> >      fchabt.insn = ins.insn and
>> >      fchabt.arbn = arb.arbn and
>> >      gbd.stcn = stc.stcn and
>> >      gbd.rmn = rm.rmn and
>> >      stf.gfhn = gfh.gfhn and
>> >      stf.mngn = mng.mngn and
>> >      stf.rstkmbn = rstkmb.rstkmbn and
>> >      stf.knzn = knz.knzn
>> >
>> > order by
>> >
>> >      stf.bzc, stf.nme_praefix, stf.agg asc, mng.wrt desc,
>> >      gfh.kb1, gfh.kb2, gfh.kb3, rstkmb.rst1, rstkmb.rst2,
>> >      rstkmb.rst3, rstkmb.rst4, stf.bgk, stf.wgk
>> -------------------------------------------------------------------------
----
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>
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