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<div class="moz-cite-prefix">On 01/06/16 10:42, Aleš Šturm wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">yes, if the priority is the same, records
should be ordered by received_time. Acting in this way, when
“presentity” table has more than one record of the same user
with equal priority, to watcher would be send Notify message
with last received status.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">SQL like:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">select * from presentity where username=X and
priority=Y order by received_time desc;<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US"><o:p> </o:p></span></p>
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Well, the priority is not known in advance, query is like:<br>
<br>
select ... from presentity by matching the user and event, ordering
either by receive_time when retrieve_order=0 or by priority if
retrieve_order=1.<br>
<br>
Here it looks like order by has to be a combination of the two
columns.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
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