Re: Remove mention in docs that foreign keys on partitioned tables are not supported

On 2018/07/02 14:46, Ashutosh Bapat wrote:
> This constraint was added to the partitioned table and inherited from
> there. If user wants to drop that constraint for some reason, this
> error message doesn't help. The error message tells why he can't drop
> it, but doesn't tell, directly or indirectly, the user what he should
> do in order to drop it. When there was only a single way, i.e table
> inheritance, to "inherit" things users could probably guess that. But
> now there are multiple ways to inherit things, we have to help user a
> bit more. The user might figure out that ti's a partition of a table,
> so the constraint is inherited from the partitioned table. But it will
> help if we give a hint about from where the constraint was inherited
> like the error message itself reads like "can not drop constraint
> "p_a_check" on relation "p1" inherited from "partitioned table's name"
> OR a hint "you may drop constraint "p_a_check" on the partitioned
> table "partitioned table's name". It might even suffice to say
> "partition p1" instead "relation p1" so that the user gets a clue.

It might be a good idea to mention if the table is a partition in the HINT
message. ERROR message can remain the same.

Thanks,
Amit