PL/Container R does not return correct NULL result

[HaozhouWang]

Function:

CREATE OR REPLACE FUNCTION rint2(i int2) RETURNS int2 AS $$
# container:  plc_r_shared
return (as.integer(i))
$$ LANGUAGE plcontainer;

Expected:

select rint2(NULL::int2);
 rint2 
-------
      
(1 row)

Actual:

select rint2(NULL::int2);
 rint2
-------
     0
(1 row)

[cf-gitbot]

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[xuebinsu]

This issue is due to RClient does not handle NULL values (NA values in R) correctly when returning results. This is now fixed and PR has been sent (but not merged yet).

[xuebinsu]

PR was merged.