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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?.
id | name | start | end | count |
---|---|---|---|---|
1 | A | 2018-12-10 | 2018-12-20 | 34 |
2 | B | 2018-12-15 | 2018-12-27 | 19 |
3 | C | 2018-12-16 | 2018-12-20 | 56 |
4 | D | 2018-12-25 | 2018-12-30 | 43 |
SELECT 4
acts | sum | start | end |
---|---|---|---|
{B,D} | 62 | 2018-12-15 | 2018-12-30 |
{A,B,C} | 109 | 2018-12-10 | 2018-12-27 |
{A,B} | 53 | 2018-12-10 | 2018-12-27 |
SELECT 3