[SPARK-8199] date/time function: date_format

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: SQL
• Target Version/s: 1.5.0
• Sprint: Spark 1.5 release
• Assignee: Tarek Auel
• Reporter: Reynold Xin
• Created: 09/Jun/15 06:16
• Updated: 19/Jul/15 06:03
• Resolved: 19/Jul/15 05:52

Description

date_format(date/timestamp/string ts, string fmt): string

Converts a date/timestamp/string to a value of string in the format specified by the date format fmt (as of Hive 1.2.0). Supported formats are Java SimpleDateFormat formats – https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html. The second argument fmt should be constant. Example: date_format('2015-04-08', 'y') = '2015'.
date_format can be used to implement other UDFs, e.g.:
dayname(date) is date_format(date, 'EEEE')
dayofyear(date) is date_format(date, 'D')

Issue Links

• relates to: SPARK-8864 Date/time function and data type design
• links to: [Github] Pull Request #6981 (tarekauel)
• links to: [Github] Pull Request #7505 (tarekauel)