On Aug 18, 2008, at 12:21 PM, Thomas Sailer wrote:
>
> The following query, however, takes a long time (almost half a
> minute):
> select * from mapelements,mapelements_rtree where
> mapelements_rtree.NELAT>=79000000 and
> mapelements_rtree.SWLAT<=80000000 and
> mapelements_rtree.NELON>=79000000 and
> mapelements_rtree.SWLON<=80000000 and
> mapelements.ID=mapelements_rtree.ID;
Please try changing the last term as shown below (add a "+" before the
r-tree ID column):
mapelements.ID = +mapelements_rtree.ID
Let us know what happens to performance.
D. Richard Hipp
[EMAIL PROTECTED]
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