Re: WIP: Enhanced ALTER OPERATOR

Hello Hackers.

I reworked the patch. Now, the syntax is similar to CREATE OPERATOR.
And as I wrote earlier problems with the cache I have not found. If someone 
can suggest how it could be verified that would be happy.

New syntax example:
ALTER OPERATOR === (boolean, boolean) SET (COMMUTATOR = =);
ALTER OPERATOR === (boolean, boolean) SET (NEGATOR = =);
ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = example_func);
ALTER OPERATOR === (boolean, boolean) SET (JOIN = example_func);

ALTER OPERATOR === (boolean, boolean) SET (
	COMMUTATOR = NULL,
	NEGATOR = NULL,
	RESTRICT = NULL,
	JOIN = NULL
);


Thanks!

-- 
Uriy Zhuravlev
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company