Re: query help

From: wsheldah(at)lexmark(dot)com
To: "G(dot)L(dot) Grobe" <gary(at)grobe(dot)net>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: query help
Date: 2001-08-31 12:41:48
Message-ID: 200108311242.IAA23268@interlock2.lexmark.com
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For one specific label:
select TableB.label from TableA, TableB where TableA.idA=TableB.idA and
TableA.name='test2';

To get a list of name-label pairs:
select TableA.name, TableB.label from TableA, TableB where TableA.idA=TableB.idA
order by TableA.name, TableB.label;

"G.L. Grobe" <gary%grobe(dot)net(at)interlock(dot)lexmark(dot)com> on 08/30/2001 07:45:20 PM

To: pgsql-general%postgresql(dot)org(at)interlock(dot)lexmark(dot)com
cc: (bcc: Wesley Sheldahl/Lex/Lexmark)
Subject: [GENERAL] query help

Hi all,

How would I get TableB.label if all I know about is TableA.name?

I was thinking about a query on TableA first, then within the while
(rs.next()), I'd do another query using the result set from A on B, but I
don't like that much, and it seems kind of slow.

Any help much appreciated!

TableA
idA | name | class
-----------------
11 test1 1
12 test2 1
13 test3 2
14 test4 2

TableB
idB | idA | label
----------------
1 11 nameA
2 12 nameB
3 13 nameC
4 14 nameD

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