[GitHub] [calcite] bchapuis opened a new pull request, #2917: [CALCITE-5280] Add geometry aggregate functions

[GitBox]

bchapuis opened a new pull request, #2917:
URL: https://github.com/apache/calcite/pull/2917

   This PR addresses 
[CALCITE-5280](https://issues.apache.org/jira/browse/CALCITE-5280).
   
   Notice that I had to remove one of the existing ST_UNION function (due to a 
name clash?). Also, this function is not implemented in 
[postgis](https://postgis.net/docs/ST_Union.html).
   
   ```
    @SemiStrict public static Geometry ST_Union(Geometry geomCollection) {
       return geomCollection.union();
    }
   ```


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