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https://issues.apache.org/jira/browse/DRILL-1259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rahul Challapalli closed DRILL-1259.
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> Drill changing the order of the columns when the first record has null value
> for the column
> -------------------------------------------------------------------------------------------
>
> Key: DRILL-1259
> URL: https://issues.apache.org/jira/browse/DRILL-1259
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - JSON
> Reporter: Rahul Challapalli
> Fix For: 0.5.0
>
>
> git.commit.id.abbrev=98b208e
> JSON File Used :
> {code}
> {
> "a" : null,
> "b" : 1
> }
> {
> "a" : 1,
> "b" : 1
> }
> {code}
> Query : The order has changed in the below result
> {code}
> select * from `temp.json`;
> +------------+------------+
> | b | a |
> +------------+------------+
> | 1 | null |
> | 1 | 1 |
> +------------+------------+
> {code}
> However with the below dataset where the null field is in the second row
> drill preserves the order
> {code}
> {
> "a" : 1,
> "b" : 1
> }
> {
> "a" : null,
> "b" : 1
> }
> {code}
> Query:
> {code}
> select * from `temp.json`;
> +------------+------------+
> | a | b |
> +------------+------------+
> | 1 | 1 |
> | null | 1 |
> +------------+------------+
> {code}
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