[SPARK-30236] Clarify date and time patterns supported by date_format

• Type: Documentation
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.4
• Fix Version/s: 2.4.5, 3.0.0
• Component/s: Documentation
• Assignee: John Ayad
• Reporter: John Ayad
• Created: 12/Dec/19 13:37
• Updated: 19/Dec/19 20:39
• Resolved: 14/Dec/19 21:08

Description

Docs for date_format do not specify which date & time format patterns are supported, leading to such problems as the one reported in this StackOverflow question.

Would appreciate linking in date_format's docs to the Java class we're following in the date/time patterns.

Issue Links

• links to: GitHub Pull Request #26864
• links to: GitHub Pull Request #26867