On Thursday, September 14, 2023, PG Doc comments form <
noreply@postgresql.org> wrote:
I observed that arrays inside JSONB preserved order of insertion. An
explicit line about whether the array order will be preserved or not would
be helpful.
We don’t take on responsibility for teaching people what json is. Json arrays are slotted composite elements where the slots are numerically indexed. That, by definition, makes their contents “ordered”. The fact that object keys are unordered and that arrays can be object keys is immaterial to whether the contents of arrays are ordered.
David J.
