[IMPALA-8703] SQL:2016 datetime patterns - Milestone 1

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 2.2.4
• Fix Version/s: Impala 3.4.0
• Component/s: Backend, Frontend
• Target Version: Impala 3.4.0
• Epic Color: ghx-label-6
• Assignee: Gabor Kaszab
• Reporter: Gabor Kaszab
• Created: 25/Jun/19 07:41
• Updated: 15/Dec/19 23:50
• Resolved: 19/Sep/19 19:33

Description

Design doc for SQL:2016 datetime patterns:
https://docs.google.com/document/d/1V7k6-lrPGW7_uhqM-FhKl3QsxwCRy69v2KIxPsGjc1k/

Milestone 1 content:

• Introduce FORMAT clause for CAST()
• Implement basic SQL:2016 datetime patterns to comply with the standard. For more details check the document above.
• Use the new SQL:2016 pattern handling for CAST(.. FORMAT..)