feature request: import features with tags that do not have a column about osm2pgsql HOT 5 CLOSED

Unsure what you mean but the normal --hstore option will import all tags that do not have an explicit column into the hstore. Features that have no value in any of the columns will still be imported. Only if you specify --hstore-match-only will such features be dropped.

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Thank you. That answers my question. I had overlooked the subtext of --hstore-match-only

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Though one problem is then how to add the hint that a way should be interpreted as polygon.
It seems that this could already be done with lua.style, but for the default style config something like a 'nocolumn' flag would be good.

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Ok found it, "phstore" is the flag I was looking for. Could you add the comment for phstore flag to default.style?
And I also found out that "delete" flag does basic wildcard matching which is not documented either.

from output-pgsql.h
#define FLAG_PHSTORE 17 /* polygons without own column but listed in hstore; this implies FLAG_POLYGON */

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This issue seems resolved now

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