SQL -select count- - Mailing list pgsql-sql

From Giannis
Subject SQL -select count-
Date
Msg-id 00cf01c28fee$144d8bd0$dd4186c3@edunet.uoa.gr
Whole thread Raw
Responses Re: SQL -select count-  (Richard Huxton <dev@archonet.com>)
Re: SQL -select count-  (Achilleus Mantzios <achill@matrix.gatewaynet.com>)
List pgsql-sql
when I do :

select count(column_name) from table_name

should I get the count for all columns or just those which are not null?
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