Count for pagination - Mailing list pgsql-general

From Jason Long
Subject Count for pagination
Date
Msg-id 1302288171.7116.55.camel@localhost.localdomain
Whole thread Raw
List pgsql-general
The main search screen of my application has pagination.

I am basically running 3 queries with the same where clause.

1.  Totals for the entire results(not just the number of rows on the
first page)
   a.  <300 ms
2.   Subset of the total records for one page.
   a.  1-2 sec
3.   Count of the total records for the pagination to show the number of
pages
  a. 1-2 sec

The queries are generated by Hibernate and I am looking to rewrite them
in native SQL
to improve performance.

Any suggestions on how to get the count of all records that could be
returned and only
a subset of those records for that  page in an optimized fashion?  I
have no problem using
a widow query or a Postgres specific feature as my app only runs on
Postgres.


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