Provide sql query for below one

Question

hi everyone,
in my source table [finanace_dept] contains two columns [finance_id,r_mature_kd] with 2 million records and sample data given below.
finance_id r_mature_kd
1 H
1 T
1 T
2 T
3 H
4 S
4 T
4 T
5 X
6 H
6 L
6 L
6 M
please provide sql query for below expected output.
expected output :
finance_id r_mature_kd
1 H
1 T
4 S
4 T
6 H
6 L
6 M
for column finance_id: '1', contains three records, but two distinct r_mature_kd hence it should retrive only two records with H,T
for column finance_id: '2','3', contains only one record hence this records should not retrive.
for column finance_id: '6', contains four records, but three distinct r_mature_kd hence it should retrive only two records with H,L,M
please help on this.

Answer 1

WITH T(finance_id,r_mature_kd) AS (
SELECT 1, 'H' FROM DUAL UNION ALL
SELECT 1, 'T' FROM DUAL UNION ALL
SELECT 1, 'T' FROM DUAL UNION ALL
SELECT 2, 'T' FROM DUAL UNION ALL
SELECT 3, 'H' FROM DUAL UNION ALL
SELECT 4, 'S' FROM DUAL UNION ALL
SELECT 4, 'T' FROM DUAL UNION ALL
SELECT 4, 'T' FROM DUAL UNION ALL
SELECT 5, 'X' FROM DUAL UNION ALL
SELECT 6, 'H' FROM DUAL UNION ALL
SELECT 6, 'L' FROM DUAL UNION ALL
SELECT 6, 'L' FROM DUAL UNION ALL
SELECT 6, 'M' FROM DUAL
SELECT  DISTINCT finance_id,r_mature_kd,C FROM(
SELECT finance_id,r_mature_kd,COUNT(1) OVER (PARTITION BY finance_id) C
FROM T
WHERE C > 1
ORDER BY 1
FINANCE_ID
R_MATURE_KD
C
1
H
3
1
T
3
4
S
3
4
T
3
6
H
4
6
L
4
6
M
4
Ramin Hashimzade