[SPARK-23905] Add UDF weekday

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.4.0
• Component/s: SQL
• Target Version/s: 2.4.0
• Assignee: yucai
• Reporter: Xiao Li
• Created: 09/Apr/18 06:10
• Updated: 13/Apr/18 07:00
• Resolved: 13/Apr/18 07:00

Description

Returns the weekday index for date (0 = Monday, 1 = Tuesday, … 6 = Sunday). This is different from dayofweek, in which, the index is based on (1 = Sunday, 2 = Monday, ..., 7 = Saturday)

Issue Links

• links to: [Github] Pull Request #21009 (yucai)