[jira] [Created] (HIVE-25404) Inserts inside merge statements are rewritten incorrectly for partitioned tables

[Zoltan Haindrich (Jira)]

Zoltan Haindrich created HIVE-25404:
---------------------------------------

             Summary: Inserts inside merge statements are rewritten incorrectly 
for partitioned tables
                 Key: HIVE-25404
                 URL: https://issues.apache.org/jira/browse/HIVE-25404
             Project: Hive
          Issue Type: Bug
            Reporter: Zoltan Haindrich


{code}
drop table u;drop table t;

create table t(value string default 'def') partitioned by (id integer);
create table u(id integer);
{code}

#1 id&value specified
rewritten
{code}
FROM
  `default`.`t`
  RIGHT OUTER JOIN
  `default`.`u`
  ON `t`.`id`=`u`.`id`
INSERT INTO `default`.`t` (`id`,`value`) partition (`id`)    -- insert clause
  SELECT `u`.`id`,'x'
   WHERE `t`.`id` IS NULL
{code}
it should be
{code}
[...]
INSERT INTO `default`.`t` partition (`id`) (`value`)    -- insert clause
[...]
{code}

#2 when values is not specified

{code}
merge into t using u on t.id=u.id when not matched then insert (id) values 
(u.id);
{code}

rewritten query:
{code}
FROM
  `default`.`t`
  RIGHT OUTER JOIN
  `default`.`u`
  ON `t`.`id`=`u`.`id`
INSERT INTO `default`.`t` (`id`) partition (`id`)    -- insert clause
  SELECT `u`.`id`
   WHERE `t`.`id` IS NULL
{code}

it should be
{code}
[...]
INSERT INTO `default`.`t` partition (`id`) ()    -- insert clause
[...]
{code}

however we don't accept empty column lists



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