I have a table like this:
I have this postgres table.
| date | sender_type | content |
|---|---|---|
| 1 | PATIENT | A |
| 2 | PATIENT | B |
| 3 | USER | C |
| 4 | PATIENT | D |
| 5 | PATIENT | E |
| 6 | PATIENT | F |
| 7 | USER | G |
| 8 | USER | H |
I want an output like this
| sender_type | content |
|---|---|
| PATIENT | A,B |
| USER | C |
| PATIENT | D,E,F |
| USER | G,H |