Re: help on SQL - Mailing list pgsql-interfaces

From Kenneth Suralta
Subject Re: help on SQL
Date
Msg-id 408627AF.2020204@hq.ntsp.nec.co.jp
Whole thread Raw
In response to Re: help on SQL  (Gergely Czuczy <phoemix@harmless.hu>)
Responses Re: help on SQL  (Gergely Czuczy <phoemix@harmless.hu>)
Re: help on SQL  (Michael Stephenson <mstephenson@tirin.openworld.co.uk>)
List pgsql-interfaces
hi gergely,<br /><br /> thanks for replying..<br /> what i mean is supposing there is a table with the following
rows:<br/><pre wrap=""><tt>data
 
<span class="moz-txt-citetags"></span>-----
1
2
3
4
5
6
7

is it possible to get every other N-row in the table?
example, if N is 3.
data
-----
1
4
7

thanks,
kenneth

</tt></pre><br /><br /> Gergely Czuczy wrote:<br /><blockquote
cite="midPine.LNX.4.44.0404210907250.28604-100000@localhost"type="cite"><pre wrap="">On Wed, 21 Apr 2004, Kenneth
Suraltawrote:
 
 </pre><blockquote type="cite"><pre wrap="">hello everyone,

is it possible to get every other row in the table?
like for example:
data
-----
1
2
3
4
5
6
7   </pre></blockquote><pre wrap="">SELECT t.fields FROM table t WHERE data NOT IN (SELECT t2.data FROM tablet2 WHERE
some_whereclause);

it will select these rows which ones are not in the subquery. but you can
do it simply by getting the negate of the whereclause... </pre><blockquote type="cite"><pre wrap="">Is it possible to
havethis result (interval of 3)?
 

result
------
1
4
7   </pre></blockquote><pre wrap="">i don't see what you mean. please describe it. </pre><blockquote type="cite"><pre
wrap="">thanks,
kenneth

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   </pre></blockquote><pre wrap="">

Bye,

Gergely Czuczy
mailto: <a class="moz-txt-link-abbreviated" href="mailto:phoemix@harmless.hu">phoemix@harmless.hu</a>
PGP: <a class="moz-txt-link-freetext"
href="http://phoemix.harmless.hu/phoemix.pgp">http://phoemix.harmless.hu/phoemix.pgp</a>

"Wish a god, a star, to believe in,
With the realm of king of fantasy..."


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