Optionalint8int8 / bigint (OID 20). pg's default is 'string'. 'number' refuses a value past Number.MAX_SAFE_INTEGER.
Optionalnumericnumeric / decimal (OID 1700). pg's default is 'string'. 'number' is a double, so it can round.
Optionaldatedate (OID 1082). pg's default is 'date', a Date at local midnight; 'string' keeps YYYY-MM-DD.
Optionaljsonjson (OID 114) and jsonb (OID 3802). pg's default is 'parse'; 'string' keeps the text, as SQLite returns it.
Per-pool decoding of int8, numeric, date and json columns. Each field left out keeps pg's default.