--
-- OID
--
CREATE TABLE OID_TBL(f1 oid);
INSERT INTO OID_TBL(f1) VALUES ('1234');
INSERT INTO OID_TBL(f1) VALUES ('1235');
INSERT INTO OID_TBL(f1) VALUES ('987');
INSERT INTO OID_TBL(f1) VALUES ('-1040');
INSERT INTO OID_TBL(f1) VALUES ('');
-- bad inputs 
INSERT INTO OID_TBL(f1) VALUES ('asdfasd');
ERROR:  pg_atoi: error in "asdfasd": can't parse "asdfasd"
SELECT '' AS five, OID_TBL.*;
 five |  f1   
------+-------
      |  1234
      |  1235
      |   987
      | -1040
      |     0
(5 rows)

SELECT '' AS one, o.* FROM OID_TBL o WHERE o.f1 = oid '1234';
 one |  f1  
-----+------
     | 1234
(1 row)

SELECT '' AS four, o.* FROM OID_TBL o WHERE o.f1 <> '1234';
 four |  f1   
------+-------
      |  1235
      |   987
      | -1040
      |     0
(4 rows)

SELECT '' AS four, o.* FROM OID_TBL o WHERE o.f1 <= '1234';
 four |  f1   
------+-------
      |  1234
      |   987
      | -1040
      |     0
(4 rows)

SELECT '' AS three, o.* FROM OID_TBL o WHERE o.f1 < '1234';
 three |  f1   
-------+-------
       |   987
       | -1040
       |     0
(3 rows)

SELECT '' AS two, o.* FROM OID_TBL o WHERE o.f1 >= '1234';
 two |  f1  
-----+------
     | 1234
     | 1235
(2 rows)

SELECT '' AS one, o.* FROM OID_TBL o WHERE o.f1 > '1234';
 one |  f1  
-----+------
     | 1235
(1 row)

DROP TABLE OID_TBL;