Re: slow query execution - Mailing list pgsql-sql
| From | Trigve Siver |
|---|---|
| Subject | Re: slow query execution |
| Date | |
| Msg-id | 116998.85849.qm@web52711.mail.re2.yahoo.com Whole thread Raw |
| In response to | slow query execution (Trigve Siver <trigves@yahoo.com>) |
| Responses |
Re: slow query execution
("Bart Degryse" <Bart.Degryse@indicator.be>)
|
| List | pgsql-sql |
Hi, thanks for reply
No, I'm working with c++ and libpqxx (pgsql c++ binding). I'm using Win32 Listview control with LS_OWNERDATA style. I can use std::map to map row_number to ID field but then I must fetch all records from that table. This could be ineffective when table has about 10.000+ records and user want to view/search only first 100 records.
thanks
Trigve
No, I'm working with c++ and libpqxx (pgsql c++ binding). I'm using Win32 Listview control with LS_OWNERDATA style. I can use std::map to map row_number to ID field but then I must fetch all records from that table. This could be ineffective when table has about 10.000+ records and user want to view/search only first 100 records.
thanks
Trigve
----- Original Message ----
From: Bart Degryse <Bart.Degryse@indicator.be>
To: pgsql-sql@postgresql.org
Sent: Thursday, May 31, 2007 9:24:04 AM
Subject: Re: [SQL] slow query execution
From: Bart Degryse <Bart.Degryse@indicator.be>
To: pgsql-sql@postgresql.org
Sent: Thursday, May 31, 2007 9:24:04 AM
Subject: Re: [SQL] slow query execution
Am I right in assuming that you're working on a VB application with a ListView AxtiveX Control in it?
If so consider putting the value of the ID field of your table in the Tag Property of each item in your listview.
By looping over all items in your listview you can then check the property for certain values and adjust other properties as required (eg highlight them).
Alternatively if you're working with ado you can store the records bookmark in the tag property. That's particulary handy when you want
to look up information in a recordset when clicking on an item in the listview.
>>> Trigve Siver <trigves@yahoo.com> 2007-05-30 21:11 >>>
>----- Original Message ----
>From: Richard Huxton <dev@archonet.com>
>To: Trigve Siver <trigves@yahoo.com>
>Cc: pgsql-sql@postgresql.org
>Sent: Wednesday, May 30, 2007 9:05:09 PM
>Subject: Re: [SQL] slow query execution
>
>Trigve Siver wrote:
>>
>> I seee...when new data will be added to table, then row numbers wouldn''t be valid anymore.
>>
>> Hmmm...looked like I need to find other solution.
>
>Try explaining what it is you're trying to achieve, and maybe someone
>will be able to suggest a solution.
I need to perform search on some query (which is already shown in Listview control) and
highlight items that meet search criteria.
thanks
Trigve
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>>> Trigve Siver <trigves@yahoo.com> 2007-05-30 21:11 >>>
>----- Original Message ----
>From: Richard Huxton <dev@archonet.com>
>To: Trigve Siver <trigves@yahoo.com>
>Cc: pgsql-sql@postgresql.org
>Sent: Wednesday, May 30, 2007 9:05:09 PM
>Subject: Re: [SQL] slow query execution
>
>Trigve Siver wrote:
>>
>> I seee...when new data will be added to table, then row numbers wouldn''t be valid anymore.
>>
>> Hmmm...looked like I need to find other solution.
>
>Try explaining what it is you're trying to achieve, and maybe someone
>will be able to suggest a solution.
I need to perform search on some query (which is already shown in Listview control) and
highlight items that meet search criteria.
thanks
Trigve
____________________________________________________________________________________
Don't pick lemons.
See all the new 2007 cars at Yahoo! Autos.
http://autos.yahoo.com/new_cars.html
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