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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?.
CREATE TABLE
INSERT 0 100000
ALTER TABLE
UPDATE 100000
CREATE INDEX
| QUERY PLAN |
|---|
| Index Scan using idx_data_point on data (cost=0.41..544.58 rows=10 width=8) (actual time=0.218..0.219 rows=0 loops=1) |
| Index Cond: (geog && _st_expand('0101000020E61000003333333333F34840CDCCCCCCCCCC1A40'::geography, '10000'::double precision)) |
| Filter: st_dwithin(geog, '0101000020E61000003333333333F34840CDCCCCCCCCCC1A40'::geography, '10000'::double precision, true) |
| Planning Time: 1.591 ms |
| Execution Time: 0.606 ms |
EXPLAIN