spatial joins or operators? about pgserver HOT 2 CLOSED

The problem might be in your filter or by me not implementing the default for parameter 'columns'. I have changed the error message so that it now gives more meaningful information. The default for 'columns' ('*') is now also implemented.

About the filter:
ST_FromGeoJSON() does not define an SRID for the polygon. The filter results in an error message about trying to use mixed SRIDs. I modified your example filter by adding ST_SetSRID(...,4326):

ST_Intersects(geom, ST_SetSRID(ST_GeomFromGeoJSON('{"type":"Polygon","coordinates":[...]}'),4326))

And got some expected features as result.

Joins are currently not supported. A list of comma separated table names and adding the join expression to the filter would not be very difficult to support (= inner join only). However, this query API is already quite dangerous when used on a publicly accessible server. Data can be protected by using only low privilege database users, but complex queries or badly defined joins can easily overload the database server.

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Yes! I was actually passing a GeoJSON and it was missing it's SRID info. That was solved by adding
crs: {"type":"name","properties":{"name":"EPSG:4326"}} to the geometry.
Including this and stringifying the JSON essentially solved the filter issue.
Thanks for the join info. I will be careful and restrict privileges.

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