[DRILL-5201] Query bug: null values in result of a conditioned query

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Cannot Reproduce
• Affects Version/s: 1.9.0
• Fix Version/s: 1.14.0
• Component/s: Query Planning & Optimization
• Assignee: Jinfeng Ni
• Reporter: mehran
• Created: 17/Jan/17 11:24
• Updated: 31/May/18 23:11
• Resolved: 31/May/18 23:11

Description

I have a table with 300 columns.
When I select a query , some null columns are also returned.
This is the query that I used.
"select a,b from dfs.root.`/2016/1/17` where a=1"

For example in this query some columns are returned that "a" value is null.

I think null values are problems. Because when I add a condition to it like
"select a,b from dfs.root.`/2016/1/17` where a=1 and a IS NOT NULL"
there is not any change and still NULL values are returned.