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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?.
version |
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PostgreSQL 12.3 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5), 64-bit |
3 rows affected
column_b | column_a | column_c | column_d |
---|---|---|---|
123 | null | xyz | cold #1 |
345 | 2 | abc | cold #2 |
789 | 13 | def | cold #3 |
2 rows affected
column_b | column_a | column_c | column_d |
---|---|---|---|
123 | 1 | null | cold #1 |
345 | null | +++ | cold #2 |
789 | 13 | def | cold #3 |