Prevent Oracle minus statement from removing duplicates

Question

Given these two tables:

CREATE TABLE TEST1 (TEST  VARCHAR2(1 BYTE))
CREATE TABLE TEST2 (TEST  VARCHAR2(1 BYTE))

Where TEST1 has two rows both w

Answer 1

Another option:

SELECT TEST, row_number() OVER (PARTITION BY TEST ORDER BY TEST) FROM TEST1
MINUS
SELECT TEST, row_number() OVER (PARTITION BY TEST ORDER BY TEST) FROM TEST2

This would be MINUS with each duplicate treated as a distinct entry. Note in the example below, if TEST1 has two 'C' values and TEST2 has only one, you get one in the output.

dev> select * from test1;

T
-
A
A
B
C
C

dev> select * from test2;

T
-
B
C

dev>     SELECT TEST, row_number() OVER (PARTITION BY TEST ORDER BY TEST) FROM TEST1
  2      MINUS
  3      SELECT TEST, row_number() OVER (PARTITION BY TEST ORDER BY TEST) FROM TEST2
  4  /

T ROW_NUMBER()OVER(PARTITIONBYTESTORDERBYTEST)
- --------------------------------------------
A                                            1
A                                            2
C                                            2