Re: Add SPLIT PARTITION/MERGE PARTITIONS commands

Hi, Jiah He!

Thanks!

1.
 >I am confused by the above comments "we compare upper bound only".

Replaced: upper -> lower.


2.
 >some of the function partition_rbound_cmp can be replaced by marco
 >compare_range_bounds,
 >for example in check_two_partitions_bounds_range we can use
 >compare_range_bounds instead of partition_rbound_cmp
 >not sure if it's worth it or not.

I think would be better keep partition_rbound_cmp in this function 
because we should use "false" instead of "second_lower->kind".


3.
 ><varlistentry id="sql-altertable-split-partition">
 >should come after
 ><varlistentry id="sql-altertable-merge-partitions">
 >I’ve refactored the SPLIT PARTITION docs quite a bit—let me know if
 >they make sense.
 >Also tweaked the regression tests a little again.

Applied.
Unfortunately, I don't know English well enough to spot the inaccuracies 
in doc.
It looks good in translation.

-- 
With best regards,
Dmitry Koval

Postgres Professional: http://postgrespro.com