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4 rows affected
| id | Sydney | Melbourne | Adelaide | Perth |
|---|---|---|---|---|
| 1 | S | null | null | null |
| 2 | null | M | null | null |
| 3 | null | null | A | null |
| 4 | null | null | null | P |
4 rows affected
| id | Sydney | Melbourne | Adelaide | Perth |
|---|---|---|---|---|
| 1 | S | null | null | null |
| 2 | null | M | null | null |
| 3 | null | null | A | null |
| 4 | null | null | null | P |