[SPARK-19496] to_date with format has weird behavior

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0
• Fix Version/s: 2.2.0
• Component/s: SQL
• Labels: release-notes
• Assignee: Song Jun
• Reporter: Wenchen Fan
• Created: 07/Feb/17 15:22
• Updated: 12/Dec/22 18:11
• Resolved: 13/Feb/17 11:26

Description

Today, if we run

SELECT to_date('2015-07-22', 'yyyy-dd-MM')

will result to `2016-10-07`, while running

SELECT to_date('2014-31-12')   # default format

will return null.

this behavior is weird and we should check other systems like hive to see if this is expected.

Issue Links

• links to: [Github] Pull Request #16870 (windpiger)