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Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
9 rows affected
15 rows affected
| studyida | studyidb | gender | agea | ageb |
|---|---|---|---|---|
| a | null | M | 1 | null |
| a | null | M | 2 | null |
| a | z | M | 3 | 3 |
| a | z | M | null | 4 |
| a | z | M | null | 5 |
| b | null | F | 4 | null |
| b | null | F | 5 | null |
| b | null | F | 6 | null |
| c | null | M | 13 | null |
| c | null | M | 14 | null |
| c | null | M | 15 | null |
| c | x | M | null | 10 |
| c | x | M | null | 11 |
| c | x | M | null | 12 |
| null | w | F | null | 7 |
| null | y | F | null | 7 |
| null | w | F | null | 8 |
| null | y | F | null | 8 |
| null | w | F | null | 9 |
| null | y | F | null | 9 |
| null | u | M | null | 7 |
| null | u | M | null | 8 |
| null | u | M | null | 9 |