Dudu Markovitz created HIVE-16486:
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Summary: schema changes for partitioned tables (RESTRICT, not
CASCADE) other than adding columns at the end of a table, return wrong results
Key: HIVE-16486
URL: https://issues.apache.org/jira/browse/HIVE-16486
Project: Hive
Issue Type: Bug
Components: Serializers/Deserializers
Affects Versions: 1.1.0
Reporter: Dudu Markovitz
-----------------------------------------------------------------------------
-- Use case 1: adding a column in the middle of a table
-----------------------------------------------------------------------------
create table mytable (i1 int,i3 int) partitioned by (ver int) stored as
textfile;
insert into mytable partition(ver=1) values (1,2),(3,4);
select * from mytable;
i1 i3 ver
1 2 1
3 4 1
alter table mytable replace columns (i1 int,i2 int,i3 int);
insert into mytable partition(ver=2) values (5,6,7),(8,9,10);
select * from mytable;
**************************************************************************
I would expect values 2 and 4 to appear under column i3 , In accordance with
the columns definition of partition ver=1, but they appear under column i2.
**************************************************************************
i1 i2 i3 ver
1 2 (null) 1
3 4 (null) 1
5 6 7 2
8 9 10 2
---------------------------------------------
-- Use case 2: dropping a column
---------------------------------------------
create table mytable (i1 int,i2 int) partitioned by (ver int) stored as
textfile;
insert into mytable partition(ver=1) values (1,2),(3,4);
select * from mytable;
i1 i2 ver
1 2 1
3 4 1
alter table mytable replace columns (i1 int);
insert into mytable partition(ver=2) values (5),(6);
select * from mytable;
i1 ver
1 1
3 1
5 2
6 2
**************************************************************************
I would expect column i2 to be part of the columns list when asterisk is being
used or at least that is would be available for explicit use
**************************************************************************
select i1,i2 from mytable;
Error while compiling statement: FAILED: SemanticException [Error 10004]: Line
1:10 Invalid table alias or column reference 'i2': (possible column names are:
i1, ver)
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