Re: [HACKERS] Partition-wise join for join between (declaratively)partitioned tables

On Wed, Jul 19, 2017 at 9:54 AM, Rafia Sabih
<rafia.sabih@enterprisedb.com> wrote:
>
> Partition information:
> Type of partitioning - single column range partition
> Tables partitioned - Lineitem and orders
>
> Lineitem -
> Partition key = l_orderkey
> No of partitions = 18
>
> Orders -
> Partition key = o_orderkey
> No of partitions = 11
>

The patch set upto 0015 would refuse to join two partitioned relations
using a partition-wise join if they have different number of
partitions. Next patches implement a more advanced partition matching
algorithm only for list partitions. Those next patches would refuse to
apply partition-wise join for range partitioned tables. So, I am
confused as to how come partition-wise join is being chosen even when
the number of partitions differ.

-- 
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company