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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?.
14 rows affected
ts val
100000 50
130100 30050
160100 60050
190200 100
220200 30100
250200 30100
300000 300
500000 100
550000 1000
600000 1000
650000 2000
700000 2000
720000 2000
750000 300
ts val rank
100000 50 1
190200 100 1
500000 100 2
300000 300 1
750000 300 2
550000 1000 1
600000 1000 2
650000 2000 1
700000 2000 2
720000 2000 3
130100 30050 1
220200 30100 1
250200 30100 2
160100 60050 1