Am 16.05.2010 12:15, schrieb Tim Alder:

As far I know the hstore support no "like" command.

Well, you can do WHERE (tags->'name' LIKE 'A%') but I'm not sure if this can take use of any index.

So a column index would be nice to get e.g. all streets beginning "A..." in an area: "where name like 'A%'" or looking for something like "Amselweg" or "Amselstraße"... So perhaps line table would be better than the point table for testing.

We are updated with the main db now, so I added the two indexes on the line table:

CREATE INDEX planet_line_name ON planet_line (name); CREATE INDEX planet_line_ref ON planet_line (ref);

and did some test-queries (see textfile). of course the BitmapAnd is much faster then the hstore like. As far as I understood we'll have to add those indexes to the other tables as well, right?

Peter