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Zhang Jing-A52198 wrote:
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<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Hi All,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">When I use the “from”
keyword to pull data from
external database, will those data get inserted to the current working
memory?</span></font></p>
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No, think of it link a nested for loop. That data is local to the rule,
you cannot retract it, they will be garbage collected with the existing
woringmemory elements that join with them are removed.<br>
<br>
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cite="mid:B39E8DC791D25648A9F8B344B9029662078E11C1@de01exm61.ds.mot.com"
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<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"> Do
I need to retract them after the rules are fired?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Thanks,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Jing<o:p></o:p></span></font></p>
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