Re: dubious warning: FORMAT JSON has no effect for json and jsonb types

On Wed, Aug 16, 2023 at 8:55 AM Peter Eisentraut <peter(at)eisentraut(dot)org>
wrote:

> This warning comes from parse_expr.c transformJsonValueExpr() and is
> triggered for example by the following test case:
>
> SELECT JSON_OBJECT('foo': NULL::json FORMAT JSON);
> WARNING: FORMAT JSON has no effect for json and jsonb types
>
> But I don't see anything in the SQL standard that would require this
> warning. It seems pretty clear that FORMAT JSON in this case is
> implicit and otherwise without effect.
>
> Also, we don't have that warning in the output case (RETURNING json
> FORMAT JSON).
>
> Anyone remember why this is here? Should we remove it?

+1 for removing, on the basis that it is not suprising, and would pollute
logs for most configurations.

merlin