I have a table called points and based on distinct values of entires, I want to sum valid entries.
I have this:
| valid_entries | Codes |
|---|---|
| 1 | 768 |
| 2 | 1224 |
| 2 | 1224 |
| 1 | 512 |
| 1 | 512 |
Based on distinct values I would have:
| valid_entries | codes |
|---|---|
| 1 | 768 |
| 2 | 1224 |
| 1 | 512 |
I want to get the sum of valid_entries that would be 4.
I have tried this one and I have PostgreSQL 11.5 version and I am new to this. I would really appreciate it if anyone could help with this.
SELECT sum(valid_entries) FROM
(SELECT count(distinct(codes)) FROM points WHERE participant_id='123') t