joining VIEWs - Mailing list pgsql-sql

From Brian Cox
Subject joining VIEWs
Date
Msg-id 20060822164004.88034.qmail@web39806.mail.mud.yahoo.com
Whole thread Raw
Responses Re: joining VIEWs  (Stephan Szabo <sszabo@megazone.bigpanda.com>)
List pgsql-sql
<font size="2">Given a view like:<br /><br /> create view view1 as<br /> select g.id as UserGroupId, s.uid as UserId,
s.timeas StartTime from stats s join groups g on g.uid = s.uid<br /><br /> and a SELECT like:<br /><br /> select
a.UserGroupId,b.UserGroupIdfrom view1 a<br /> full outer join view1 b on b.UserGroupId = a.UserGroupId<br /> WHERE
a.StartTime>= '2006-1-1' AND a.StartTime < '2007-1-1'<br />   AND b.StartTime >= '2005-1-1' AND b.StartTime
<'2006-1-1';<br /><br /> where there are 5695 rows in 2006 and 1 row in 2005, I expected to get a result set of 5695
rows,but instead got only 1 row (the common row in the 2 years).  This seems contrary to the definition of "full outer
join". Am I missing something?<br /><br /> Thanks,<br /> Brian Cox</font><p><hr size="1" />Talk is cheap. Use Yahoo!
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