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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?.
eq1 eq2 eq3
t t t
stringexpression simple_test test1 test2 test_coalesce1 test_coalesce2 test_coalesce3
foo f f f f f f
t t t t t t
null null t t t t t
    t t t t t t
stringexpression simple_test test1 test2 test_coalesce1 test_coalesce2 test_coalesce3
foo f f f f f f
t t t t f f
null null t t t t f
    f f f f f f