Exercise idea: latest unique key value #180
Description
Given:
| key | value | timestamp |
|---|---|---|
| a | 1 | mon |
| b | 2 | wed |
| b | 3 | thu |
Select the latest (largest timestamp) for each key.
I.e., find (a-> 1), and (b ->3)
{{ message }}
Given:
| key | value | timestamp |
|---|---|---|
| a | 1 | mon |
| b | 2 | wed |
| b | 3 | thu |
Select the latest (largest timestamp) for each key.
I.e., find (a-> 1), and (b ->3)