On Wed, Sep 14, 2011 at 1:05 PM, Fabrízio de Royes Mello <fabriziome...@gmail.com> wrote: > > 2011/9/14 Bob Pawley <rjpaw...@shaw.ca> >> >> Hi >> >> Is there a method of counting the number of elements in an array?? >> > > Yes... > Use function array_upper [1]. > See an example: > postgres@bdteste=# SELECT array_upper(ARRAY['foo', 'bar'], 1); > array_upper > ------------- > 2
that only gives you one dimension's worth elements, and only is correct if the array is 1 based. select count(*) from unnest(_array_); will give you an exact count. another way to do it which doesn't require expanding the array would be to parse and calculate # elements from the output of array_dims() (which is unfortunately returned as text). merlin -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
