Hi all,

I have a table with a MULTIPOLYGON field with around 100k records. Some of 
these records, 2K have self intersections and other problems that make 
ST_IsValid return false. The polygons overlap a lot and I wanted to generate 
another table that will be the union of all polygons.

The table looks like 
id, the_geom

What would be the best way to union all of the geometries into a new table 
where there is only POLYGONS that do not overlap?

Thanks in advance.

Javier.


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