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Not sure. not the big SQL guru. Just trail and error on my part. :)) .
Anyway, I'm testing it right now, with 550,000 records, I'm getting
probably just under a 2 second turnaround.
Michael Schutte
Work 614-492-7419
email michael_schutte@xxxxxxxxxxxx
"rick baird"
<rick.baird@gmail
.com> To
Sent by: "RPG programming on the AS400 /
rpg400-l-bounces@ iSeries" <rpg400-l@xxxxxxxxxxxx>
midrange.com cc
Subject
04/12/2006 02:09 Re: SQLRPG - prepare, declare, no
PM cursor
Please respond to
RPG programming
on the AS400 /
iSeries
<rpg400-l@midrang
e.com>
Thanks Mike,
I don't have a big problem with this at all, except that it might be
slower?
I wonder, would it have to evaluate the host variable (A1L0x) for each
record retrieved to determine it's inclusion?
On 4/12/06, Michael_Schutte@xxxxxxxxxxxx <Michael_Schutte@xxxxxxxxxxxx>
wrote:
> Rick,
>
> I use this type of code all the time. It works really well.
>
> WHERE PRER = :A1ER
> AND (PRL01 = :A1L01 Or :A1L01 = ' ')
> AND (PRL02 = :A1L02 Or :A1L02 = ' ')
> AND (PRL03 = :A1L03 Or :A1L03 = ' ')
> AND (PRL04 = :A1L04 Or :A1L04 = ' ')
> AND (SUBSTRING(PREN,6,4) = :A1EN4 Or :A1EN4 = ' ')
> AND (PRFNM LIKE (CASE
> WHEN :FName <> ' ' THEN :FName
> ELSE ' '
> END)
> OR :FName = ' ')
>
> It will only pick records, when my host variables are populated.
>
> Michael Schutte
> Work 614-492-7419
> email michael_schutte@xxxxxxxxxxxx
>
>
>
> "rick baird"
> <rick.baird@gmail
> .com> To
> Sent by: "RPG programming on the AS400 /
> rpg400-l-bounces@ iSeries" <rpg400-l@xxxxxxxxxxxx>
> midrange.com cc
>
> Subject
> 04/12/2006 12:55 Re: SQLRPG - prepare, declare, no
> PM cursor
>
>
> Please respond to
> RPG programming
> on the AS400 /
> iSeries
> <rpg400-l@midrang
> e.com>
>
>
>
>
>
>
> sort of.
>
> the problem is dynamically assembling my where clause. don't know
> until runtime what I'm going to select on.
>
> For what it's worth - I ended up changing it anyway - getting the
> count is going to be much slower than fetching one record (optimize
> for 1 record) - the requirement is to check for a valid combination of
> fields in this file, and it's only checking, not listing or updating.
>
> so i'm going to fetch one record to validate instead of returning a
> count - I don't care how many, only that one exists, and I want it to
> run as quickly as possible.
>
> thanks to all who helped.
>
> On 4/12/06, Thomas Gard <thomas.gard@xxxxxxxxx> wrote:
> > Is this what you want?
> >
> > C/EXEC SQL -- SQL STATMENTS
> > C+ SELECT COUNT(*)
> > C+ INTO :COUNTER
> > C+ FROM lmsfillib/jobque
> > C/END-EXEC
> >
> > --
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