From: Frank Morton <fmorton@base2inc.com>
To: pgsql-sql@postgresql.org
Subject: join question
Date: Fri, 18 Oct 2002 13:58:13 -0500
Message-ID: <027d01c276d8$504a1100$8455e5ce@edison> (raw)
References: <F53s0dt2NCF6TMlz9K90000565d@hotmail.com>
For the SQL gurus, a query where I'm not getting the expected
results. Trying to write it using sql compatible with both postgres
and mysql.
There are two tables:
table = profile
int id
char name
table = attribute
int id
int containerId
char name
char value
Multiple attribute rows correspond to a single profile row where
attribute.containerId = profile.id
These two queries result in one row being returned, which is
the expected result:
select name from profile where ((profile.state='1020811'));
select profile.name from profile,attribute where (((attribute.name='description') and (attribute.value='1020704') and (profile.id=attribute.containerId)));
But, I thought this next query would just be a simple way to combine the two
queries with an "or" operator, still returning one row, actually returns
ALL rows of attribute:
select profile.name from profile,attribute where ((profile.state='1020811') or ((attribute.name='marketsegment') and (attribute.value='1020704') and (profile.id=attribute.containerId)));
Why doesn't this last query return just one row?
TIA
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To: pgsql-sql@postgresql.org
Cc: fmorton@base2inc.com
Subject: Re: join question
In-Reply-To: <027d01c276d8$504a1100$8455e5ce@edison>
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