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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?.
4 rows affected
| id | code | name | parent |
|---|---|---|---|
| 1 | M0 | 系統 | null |
| 2 | M00 | 權限 | 1 |
| 3 | M00-00 | 角色權限 | 2 |
| 4 | M00-01 | 角色審核 | 2 |
| id | path |
|---|---|
| 1 | [M0,系統] |
| 2 | [M0,系統] -> [M00,權限] |
| 3 | [M0,系統] -> [M00,權限] -> [M00-00,角色權限] |
| 4 | [M0,系統] -> [M00,權限] -> [M00-01,角色審核] |