PostgreSQL DISTINCT ON with different ORDER BY
I want to run this query: SELECT DISTINCT ON (address_id) purchases.address_id, purchases.* FROM purchases WHERE purchases.product_id = 1 ORDER BY purchases.purchased_at DESC But I get this error: PG::Error: ERROR: SELECT DISTINCT ON expressions must match initial ORDER BY expressions Adding address_id as first ORDER BY expression silences the error, but I really don’t want to … Read more
