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From: Michael Peppler <mpeppler at peppler dot org>
Subject: Re: Moving to a specific row
Date: Aug 31 2000 6:31PM
ye, wei writes:
> Michael Peppler wrote:
> > Andrew Armstrong writes:
> > > I routinely have to report large numbers of database table rows to a web page
> > > and was having a problem limiting the number of rows I display using the
> > > standard CTlib methods. I can use set rowcount xxxx but this only limits the
> > > resultset to the first xxxx rows. I want to be able to move the resultset to a
> > > row that I choose. I can do this in PHP and was wondering how the best way to do
> > > this in Perl would be.
> > >
> > > The only solution that i have found is to call ct_fetch() xxxx times and ignore
> > > the results or to use ct_sql to move the results into an array and start at the
> > > xxxx element. Neither of these seem very good for system performace.
> > >
> > I don't see how PHP could do this any better than perl. It is limited
> > by what Sybase understands, and in this particular case it is limited
> > by the way SQL works.
> Just read PHP Sybase module, it seems that in sybase_query(), it reads
> *ALL* results into memory, then it can use sybase_data_seek() to locate record
> position later.
Right - you could do the same thing using ct_sql() (or
Sybase::Simple's ArrayOfHash()). The downside for sybperl is that the
code is implemented in perl, which would be a little slower than C.
I hope PHP has some row limit so that a runaway query doesn't crash
Michael Peppler -||- Data Migrations Inc.
email@example.com -||- http://www.mbay.net/~mpeppler
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