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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 7
CREATE TABLE
INSERT 0 3
id | quantity |
---|---|
1 | 1 |
2 | 666 |
3 | null |
4 | 33 |
5 | 666 |
6 | -1 |
7 | 666 |
SELECT 7
id | quantity |
---|---|
5 | 666 |
2 | 666 |
7 | 666 |
SELECT 3
id | quantity |
---|---|
5 | 666 |
2 | 666 |
7 | 666 |
SELECT 3
id | quantity |
---|---|
2 | 666 |
SELECT 1
id | quantity |
---|---|
2 | 666 |
5 | 666 |
7 | 666 |
SELECT 3
id | quantity |
---|---|
5 | 666 |
2 | 666 |
7 | 666 |
SELECT 3
id | quantity |
---|---|
1 | null |
2 | null |
3 | null |
SELECT 3
id | quantity |
---|---|
1 | null |
2 | null |
3 | null |
SELECT 3
id | quantity |
---|
SELECT 0