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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to intersection multiple sets of geographical data using ST_intersection function. But query execution time is long.
<o:p></o:p></p>
<p class="MsoNormal">My Query is : <o:p></o:p></p>
<p class="MsoNormal">select st_intersection (st_intersection (t1.geometry, t2.geometry), t3.geometry) geometry from TEMP_OUTPUTTREE_2 t1,TEMP_OUTPUTTREE2_4 t2, TEMP_OUTPUTTREE_5 t3<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am having three table its having geometry data. I want to intersect operation on those data.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please suggest, Is there any optimal way to get the intersection with less execution time?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Atul Kumar<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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