I managed to get it working. The only problem is speed.
I'm using it in a function and having to test a couple thousand polygons
takes ages. I also tried using a temp table, this is also not an option
because of the speed issue.
have-you created GiST index on the temp table you are using ?
It should greatly improve the performance.
postgis, when using the && operator, uses spatial index to reduce the
list of candidates to evaluate.
Nicolas
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