Hi All,

I am trying  to intersection multiple sets of  geographical data using 
ST_intersection function. But query execution time is long.
My Query is :
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

I am having three table its having geometry data. I want to intersect operation 
on those data.

Please suggest, Is there any optimal way to get the intersection with less 
execution time?

Thanks
Atul Kumar


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