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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 1000
CREATE TABLE
INSERT 0 100000
CREATE INDEX
CREATE TYPE
user_id | log_date | payload |
---|---|---|
991 | 2014-12-03 | 781 |
992 | 2015-01-05 | 406 |
993 | 2014-12-25 | 241 |
994 | 2014-12-29 | 240 |
995 | 2015-01-07 | 225 |
996 | 2014-12-27 | 171 |
997 | 2014-11-17 | 231 |
998 | 2015-01-05 | 822 |
999 | 2014-12-19 | 333 |
1000 | 2014-12-26 | 190 |
SELECT 10
user_id | log_date | payload |
---|---|---|
991 | 2014-12-03 | 781 |
992 | 2015-01-05 | 406 |
993 | 2014-12-25 | 241 |
994 | 2014-12-29 | 240 |
995 | 2015-01-07 | 225 |
996 | 2014-12-27 | 171 |
997 | 2014-11-17 | 231 |
998 | 2015-01-05 | 822 |
999 | 2014-12-19 | 333 |
1000 | 2014-12-26 | 190 |
SELECT 10
user_id | log_date | payload |
---|---|---|
991 | 2014-12-03 | 781 |
992 | 2015-01-05 | 406 |
993 | 2014-12-25 | 241 |
994 | 2014-12-29 | 240 |
995 | 2015-01-07 | 225 |
996 | 2014-12-27 | 171 |
997 | 2014-11-17 | 231 |
998 | 2015-01-05 | 822 |
999 | 2014-12-19 | 333 |
1000 | 2014-12-26 | 190 |
SELECT 10
user_id | log_date | payload |
---|---|---|
991 | 2014-12-03 | 781 |
992 | 2015-01-05 | 406 |
993 | 2014-12-25 | 241 |
994 | 2014-12-29 | 240 |
995 | 2015-01-07 | 225 |
996 | 2014-12-27 | 171 |
997 | 2014-11-17 | 231 |
998 | 2015-01-05 | 822 |
999 | 2014-12-19 | 333 |
1000 | 2014-12-26 | 190 |
SELECT 10