Re: Add SPLIT PARTITION/MERGE PARTITIONS commands

Hi!

1.
Alexander Lakhin sent a question about index name after MERGE (partition
name is the same as one of the merged partitions):

----start of quote----
I'm also confused by an index name after MERGE:
CREATE TABLE t (i int) PARTITION BY RANGE (i);

CREATE TABLE tp_0_1 PARTITION OF t FOR VALUES FROM (0) TO (1);
CREATE TABLE tp_1_2 PARTITION OF t FOR VALUES FROM (1) TO (2);

CREATE INDEX tidx ON t(i);
ALTER TABLE t MERGE PARTITIONS (tp_1_2, tp_0_1) INTO tp_1_2;
\d+ t*

Table "public.tp_1_2"
Column | Type | Collation | Nullable | Default | Storage |
Compression | Stats target | Description
--------+---------+-----------+----------+---------+---------+-------------+--------------+-------------
i | integer | | | | plain |
| |
Partition of: t FOR VALUES FROM (0) TO (2)
Partition constraint: ((i IS NOT NULL) AND (i >= 0) AND (i < 2))
Indexes:
"merge-16385-3A14B2-tmp_i_idx" btree (i)

Is the name "merge-16385-3A14B2-tmp_i_idx" valid or it's something
temporary?
----end of quote----

Fix for this case added to file
v3-0001-Fix-for-SPLIT-MERGE-partitions-of-temporary-table.patch.

----

2.
>It seems to me that v2-0001-Fix-for-SPLIT-MERGE-partitions-of-
>temporary-table.patch is not complete either.

Added correction (and test), see
v3-0001-Fix-for-SPLIT-MERGE-partitions-of-temporary-table.patch.

--
With best regards,
Dmitry Koval

Postgres Professional: http://postgrespro.com