[SPARK-33627] Add new function UNIX_SECONDS, UNIX_MILLIS and UNIX_MICROS

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: SQL
• Assignee: Gengliang Wang
• Reporter: Gengliang Wang
• Created: 02/Dec/20 08:01
• Updated: 02/Dec/20 20:45
• Resolved: 02/Dec/20 20:45

Description

As https://github.com/apache/spark/pull/28534 adds functions from BigQuery for converting numbers to timestamp, we should add functions UNIX_SECONDS, UNIX_MILLIS and UNIX_MICROS for converting timestamp to numbers.

Issue Links

• links to: [Github] Pull Request #30566 (gengliangwang)