Subject | Re: The age old 'count' issue... |
---|---|
Author | vladman992000 |
Post date | 2010-02-23T13:49:49Z |
--- In firebird-support@yahoogroups.com, "unordained" <unordained_00@...> wrote:
Myles
> You could try to cache the resultset database-side; keep a table of recentI thought of storing the previous results set in a cache, but the problem is that the number of search options available to the user and constant changing state of the database would make this impractical. There would be too many caches required to make this a reasonable approach. But not a bad idea though.
> searches and the results that went with them (delete header and details after
> some expiration period.) When you first call the stored procedure, it runs the
> query and dumps all the results into the detail table, then returns from there
> only the rows requested (first N skip M) as you're doing now, plus can
> relatively quickly get the row count. On subsequent calls, it could match the
> query parameters to current entries in the recent-searches table; that'll match
> that user's previous search, and possibly from other users (if desired --
> depends on your security model), saving time. It may be less expensive to push
> the data from a query directly into a local table than to download the whole
> resultset to PHP for parsing. It may be possible to store less than the full
> resultset in the database, depending on the joins at query time vs. disk speed
> when caching the data.
Myles