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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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1 | Mike | [{"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 1}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 5}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 3}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 4}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 2}] |
2 | Jake | [{"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 3}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 2}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 4}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 1}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 5}] |
3 | Toots | [{"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 3}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 1}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 4}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 2}, {"end": "2019-01-26T17:14:37.349739", "start": "2018-10-18T17:14:37.349739", "is_fetched": true, "external_id": 5}] |