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mehran updated DRILL-5201: -------------------------- 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. was: 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. If we? 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 > Returning null > --------------- > > Key: DRILL-5201 > URL: https://issues.apache.org/jira/browse/DRILL-5201 > Project: Apache Drill > Issue Type: Bug > Components: Client - HTTP > Affects Versions: 1.9.0 > Reporter: mehran > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)