From: Aarni =?iso-8859-1?q?Ruuhim=E4ki?= <aarni@kymi.com>
Reply-To: aarni@kymi.com
Organization: KYMI.com
To: pgsql-sql@postgresql.org
Subject: Read count ?
Date: Thu, 24 Feb 2005 17:17:14 +0200
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Hi,

Could someone please give a hint on how to query the following neatly ?

Get news from a news table that belong to a particular account, get segment 
name from segments table for each news item and read count from read history 
table that gets a news_id and timestamp insert every time the news is read. 
Display everything by news count, most read news first ?

news_id 4, news_header, segment_name x, read 10 times
news_id 2, news_header, segment_name y, read 8 times
news_id 1, news_header, segment_name x, read 7 times
news_id 3, news_header, segment_name x, read 0 times

news_table:
news_id, account_id, segment_id, news_header, ...

segments_table:
segment_id, account_id, segment_name

read_history_table:
history_id, news_id, timestamp


TIA,

Aarni
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