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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 |
|---|
| 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 |
| condition | result |
|---|---|
| null = null | null |
| null != null | null |
| null in 1,2 3 | null |
| null not in 1,2,3 | null |
| null < 1 | null |
| null = 1 | null |
| null != 1 | null |
| null >=1 | null |
| null <=1 | null |
| null in (null) | null |
| null not in (null) | null |