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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 1000001
CREATE INDEX
QUERY PLAN |
---|
Bitmap Heap Scan on textfun (cost=191.68..7654.53 rows=5000 width=32) (actual time=0.033..0.034 rows=0 loops=1) |
Filter: (content ~~ '1500000%'::text) |
-> Bitmap Index Scan on text_b (cost=0.00..190.43 rows=5000 width=0) (actual time=0.030..0.030 rows=0 loops=1) |
Index Cond: ((content ~>=~ '1500000'::text) AND (content ~<~ '1500001'::text)) |
Planning Time: 0.845 ms |
Execution Time: 0.147 ms |
EXPLAIN