On Tue, May 20, 2014 at 11:55:51AM +0000, Andreas Neumann wrote: > I agree - you have to put scale constraints in the symbology of an > address table with 20 million records. Displaying all at once wouldn't > make any sense. Most likely, every pixel of your screen would be covered > if you want to display them all.
I have - I dont expect 20 Million object to be rendered :) > On our cadastral map with only a couple thousand of address points we > display house numbers from scale 2000 - otherwise you would have too > many labels and the map gets illegible. Thats not my problem - even on start at a scale of 1:8000 QGis does a full table scan on that table to check for uniqueness of the key. It does so twice by the way - once to check for uniqueness, once to do an st_extent on the geometry ... Flo -- Florian Lohoff [email protected]
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