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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
CREATE TABLE
INSERT 0 5
INSERT 0 7
INSERT 0 4
id date_time sender_uname amount_sent sender_updated_balance receiver_uname amount_received receiver_updated_balance
1 2023-01-01 u1 100 900 u2 100 1100
2 2023-01-03 u1 100 800 u3 100 1100
3 2023-01-04 u4 100 900 u1 100 900
4 2023-01-05 u1 100 800 u5 100 1100
SELECT 4