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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?.
version |
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PostgreSQL 12.17 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-20), 64-bit |
SELECT 1
CREATE TABLE
INSERT 0 3
a | b |
---|---|
aaa | 999 |
bbb | 888 |
ccc | 777 |
SELECT 3
ERROR: operator does not exist: character < integer LINE 1: select * from x order by a<b; ^ HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
ERROR: operator does not exist: character = integer LINE 1: select * from x order by a = b; ^ HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
ERROR: operator does not exist: character <> integer LINE 1: select * from x order by a <> b; ^ HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
ERROR: operator does not exist: character <> integer LINE 1: select * from x order by a <> b, b; ^ HINT: No operator matches the given name and argument types. You might need to add explicit type casts.