Re: [GENERAL] Getting total records in result set
От | Brett W. McCoy |
---|---|
Тема | Re: [GENERAL] Getting total records in result set |
Дата | |
Msg-id | Pine.LNX.4.04.9904101243210.1354-100000@dragosani.lan2wan.com обсуждение исходный текст |
Ответ на | Getting total records in result set (Mike Frisch <mfrisch@saturn.tlug.org>) |
Список | pgsql-general |
On Sat, 10 Apr 1999, Mike Frisch wrote: > What is the easiest (and least system intensive) method of getting the > total number of records in the result set? I am presently opening the > cursor, doing a FETCH ALL, reading PQntuples(), closing the cursor, and > reopening it for the 'real' work. > > Background: I am writing a CGI script that paginates the output from an > SQL query and need to know a total number of records to calculate the > number of pages to display. > > Is what I am going correct or is there a better way? If you create a view with SQL, then do 'select count(*) from <viewname>', you can just read the first (and only) row from THAT query. Can you then create your cursor from the view? Brett W. McCoy http://www.lan2wan.com/~bmccoy/ ----------------------------------------------------------------------- What garlic is to food, insanity is to art.
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