I have a `DOMAIN` on `JSONB`. I need to verify the shape of the JSON, so I have a check expression written in PL/pgSQL. The docs say
> Each constraint must be an expression producing a Boolean result
Would it be correct to raise an exception to indicate a failed check? I perform type-casts (that throw already) and other checks that would benefit from attaching a description to the client error.
Since PG will throw an error when any CHECK constraint fails, are you hoping to provide more details by throwing your own exception?