Thread: pgsql-server: Adjust ExecMakeTableFunctionResult to produce a single

Log Message:
-----------
Adjust ExecMakeTableFunctionResult to produce a single all-nulls row
when a function that returns a single tuple (not a setof tuple) returns
NULL.  This seems to be the most consistent behavior.  It would have
taken a bit less code to make it return an empty table (zero rows) but
ISTM a non-SETOF function ought always return exactly one row.  Per
bug report from Ivan-Sun1.

Modified Files:
--------------
    pgsql-server/src/backend/executor:
        execQual.c (r1.168 -> r1.169)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/execQual.c.diff?r1=1.168&r2=1.169)
        nodeFunctionscan.c (r1.26 -> r1.27)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/nodeFunctionscan.c.diff?r1=1.26&r2=1.27)