[BUGS] BUG #14842: TIMESTAMP WITH TIME ZONE and TIMESTAMP WITHOUT TIMEZONEshould not be comparable

The following bug has been logged on the website:

Bug reference:      14842
Logged by:          Eduardo Perez
Email address:      edpeur@gmail.com
PostgreSQL version: Unsupported/Unknown
Operating system:   All
Description:

Currently you can do:
CREATE TABLE t1 (ts TIMESTAMP WITH TIME ZONE NOT NULL,tr TIMESTAMP WITHOUT
TIME ZONE NOT NULL);
INSERT INTO t1 (ts,tr) VALUES (CURRENT_TIMESTAMP, CURRENT_TIMESTAMP);
SELECT * FROM t1 WHERE ts=tr;

But it should fail with:
ERROR: operator does not exist: timestamp with time zone = timestamp without
time zone
Also CURRENT_TIMESTAMP should fail to be inserted into a TIMESTAMP WITHOUT
TIME ZONE column
ERROR:  column "tr" is of type timestamp without time zone but expression is
of type timestamp with time zone


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