[Tile-serving] [openstreetmap/osm2pgsql] `way_area` in hstore instead of a separate column now? (Discussion #1589)

[Jochen Topf]

Between osm2pgsql 1.2.2 and 1.3.0 the behaviour changed. Until 1.2.2 (when used with your options) the `way_area` was **both** in its own column and in the hstore column `tags`. From 1.3.0 on the extra column isn't there any more, just the entry in `tags`. I don't remember any decision to change the somewhat strange behaviour with the two places the `way_area` was written to, so it looks like this came about as part of some cleanup of the code, which just had this side-effect but I can't find anything relevant in the commit messages.

So this is definitely a regression, but I am not sure whether it makes sense to change this now. Is this an actual problem in your case? It should be possible to just change the SQL query accessing this field.

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