Drawing together various discussions both here and elsewhere (e.g. the
PostgresOpen hallway track) I propose to work on the following:
1. make datum_to_json() honor a type's cast to json if it exists. The
fallback is to use the type's string representation, as now.
2. add a cast hstore -> json (any others needed for core / contrib types ?)
3. add a to_json(anyelement) function
4. add a new aggregate function json_agg(anyrecord) -> json to simplify
and make more effecient turning a resultset into json.
Comments welcome.
I also propose to work on some accessor functions to pull data out of
json (as opposed to producing json from non-json). I will email
separately about that when I have firmed up a proposed API a bit more.
cheers
andrew
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