[DRILL-7893] Column alias is not working for a parquet file

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0
• Fix Version/s: 1.19.0
• Component/s: Storage - Parquet
• Assignee: Vova Vysotskyi
• Reporter: Matthias Rosenthaler
• Reviewer: Paul Rogers
• Created: 12/Apr/21 11:07
• Updated: 04/May/21 04:37
• Resolved: 04/May/21 04:37

Description

The following query results in a column name of "shot_id" instead of the expected "x".

SELECT shot_id as x FROM values.parquet WHERE step = 'RPCurve_001'

The strange thing is, if I modify the query, like adding a limit clause, it is working:

SELECT shot_id as x FROM values.parquet WHERE step = 'RPCurve_001' LIMIT 1000

values.parquet