Julian Hyde created CALCITE-2031:
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Summary: Implement more OpenGIS functions
Key: CALCITE-2031
URL: https://issues.apache.org/jira/browse/CALCITE-2031
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
The initial set of OpenGIS functions were implemented in CALCITE-1968 but there
are quite a few more to implement.
Each function can be implemented separately, and with very little effort: you
typically need to find the commented function in in {{spatial.iq}}, add one or
two queries as test case, add a method to {{GeoFunctions.java}}, iterate until
the test cases work, then add a row to one of the tables in {{reference.md}} to
document that the function is now implemented.
I suggest that each pull request implements a few related functions. A good
place to start would be {{ST_X(geom)}}; {{ST_Z(geom)}} is very similar and is
already implemented.
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