Yes Of course.....The table have a primary key and indexes and the field
used in the order by are indexed (this isn't the primary field, but it's
indexed)
-----Mensaje original-----
De: Huntress Gary B NPRI [mailto:[EMAIL PROTECTED]]
Enviado el: viernes, 13 de julio de 2001 18:10
Para: 'David Tomās Fargas'
Asunto: RE: Dificult question.....
Have you created indexes on that table?
Regards,
Gary Huntress
Code 4113
Naval Undersea Warfare Center
Newport, RI 02841
1-800-669-6892 x28990
-----Original Message-----
From: David Tomās Fargas [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 13, 2001 10:41 AM
To: [EMAIL PROTECTED]
Subject: Dificult question.....
I Have a large table with 59.000 records and if i execute a simple select
since "Select * from table order by cod" it takes 4 seconds to process
query!
and if table will have 590.000 then... well, you see it.
It's possible to accelerate it, without where and limit clausules?
I think no, and in my find of solutions I develop an idea...
If I execute the same query with a where clausule with unique value, and
limit clausule to 1 value it results fine in an instant.
Ok I have one record, and I need to go to next or previous record...
And then...it's a big problem!
Because the query is sorted and, of course, I don't have any idea the
primary value for the next and previous record, How can I execute another
query to obtain those records?
I think I need a "imaginary value" in te record that gives me the position
of the current record in a totally table. Because the table are sorted, the
autonumeric fields can't help me.
And if i simple use a variable in my application to monitoring the
ficticious sorted position and play with the limit clause, I will can't set
big jumps fast between records such a search tool ...
how can I get this "imaginary value"?
Have you a new idea for solventing this?
Please, Help me....
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