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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?.
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PostgreSQL 10.12 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), 64-bit |
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installed_at | Day1 | Day2 | Day3 |
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2020-03-01 | 2 | 6 | 12 |
2020-03-02 | 2 | 6 | null |