Обсуждение: commenting on polymorphic aggregates possible?

-- value-independent transition function
CREATE AGGREGATE newcnt (   sfunc = int4inc, basetype = 'any', stype = int4,   initcond = '0'
);

COMMENT ON AGGREGATE newcnt (any) IS 'an any agg comment';
ERROR:  syntax error at or near "any" at character 30
COMMENT ON AGGREGATE newcnt (any) IS NULL;
ERROR:  syntax error at or near "any" at character 30

Is there any way of commenting that aggregate?

Chris

Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes:
> COMMENT ON AGGREGATE newcnt (any) IS 'an any agg comment';
> ERROR:  syntax error at or near "any" at character 30

ANY is a reserved word.  To reference the pseudotype named "any",
you need quotes:COMMENT ON AGGREGATE newcnt ("any") IS 'an any agg comment';

No doubt it would've been better to use a different name for the
pseudotype, but I think the behavior of CREATE AGGREGATE's
"basetype = 'any'" was chosen long before there was any thought of
making Postgres SQL-compliant :-(
        regards, tom lane