return all duplicated rows

[pik94]

Return all duplicated rows in results.

Test tables:

DROP TABLE IF EXISTS test_table_1;
CREATE TABLE test_table_1 (
    c1 integer,
    c2 text
);

INSERT INTO test_table_1(c1,c2)
VALUES
    (12, 'ABCDE'),
    (12, 'ABCDE');

DROP TABLE IF EXISTS test_table_2;
CREATE TABLE test_table_2 (
    c1 integer,
    c2 text
);

INSERT INTO test_small_table_2(c1,c2)
VALUES
    (4,'ABCDEF'),
    (4,'ABCDE'),
    (4,'ABCDE'),
    (6,'ABCDE'),
    (6,'ABCDE'),
    (6,'ABCDE');

Result before patching:

- ('12', 'ABCDE')
+ ('4', 'ABCDEF')
+ ('4', 'ABCDE')
+ ('6', 'ABCDE')

Result after patching

- ('12', 'ABCDE')
- ('12', 'ABCDE')
+ ('4', 'ABCDEF')
+ ('4', 'ABCDE')
+ ('4', 'ABCDE')
+ ('6', 'ABCDE')
+ ('6', 'ABCDE')
+ ('6', 'ABCDE')

[erezsh]

Thanks!