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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
CREATE TABLE
INSERT 0 10
INSERT 0 10
id | val | rank |
---|---|---|
10 | 106 | 1 |
9 | 96 | 2 |
8 | 86 | 3 |
7 | 76 | 4 |
6 | 66 | 5 |
5 | 56 | 6 |
4 | 46 | 7 |
3 | 36 | 8 |
2 | 26 | 9 |
1 | 16 | 10 |
SELECT 10
排骨組val | 在雞腿組排名 |
---|---|
104 | 2 |
94 | 3 |
84 | 4 |
74 | 5 |
64 | 6 |
54 | 7 |
44 | 8 |
34 | 9 |
24 | 10 |
14 | 11 |
SELECT 10