Re: ON CONFLICT DO UPDATE for partitioned tables

On 2018/04/20 4:40, Alvaro Herrera wrote:
> Alvaro Herrera wrote:
>> Amit Langote wrote:
>>
>>> Yeah, I too have wondered in the past what it would take to make
>>> equalTupDescs() return true for parent and partitions.  Maybe we can make
>>> it work by looking a bit harder than I did then.
>>
>> How about simply relaxing the tdtypeid test from equalTupleDescs?  I
>> haven't looked deeply but I think just checking whether or not both are
>> RECORDOID might be sufficient, for typecache purposes.
> 
> After looking at the code, I'm a bit nervous about doing this, because I
> don't fully understand what is going on in typcache, and what is the
> HeapTupleHeaderGetTypeId macro really doing.  I'm afraid that if we
> confuse a table's tupdesc with one of its partition's , something
> entirely random might end up happening.
> 
> Maybe this is completely off-base, but if so I'd like to have to proof.
> So I'm thinking of reverting that patch instead per your patch.
> 
> While composing this we got emails from Robert and Peter G suggesting
> the same too, so consider it done.

Thank you for committing the patch.

Regards,
Amit