Sergey Shelukhin created HIVE-12825:
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Summary: select * may not work with ctas
Key: HIVE-12825
URL: https://issues.apache.org/jira/browse/HIVE-12825
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
> create table foo3 as select * from foo2 f1 cross join foo2 f2;
Warning: Map Join MAPJOIN[7][bigTable=f1] in task 'Map 1' is a cross product
FAILED: SemanticException [Error 10036]: Duplicate column name: f
If the column names are not specified, ctas generates them; for select *, it
should also generate them if there are collisions.
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