[CALCITE-6252] BigQuery FORMAT_DATE uses the wrong calendar for Julian dates

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.36.0
• Fix Version/s: 1.37.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Mihai Budiu
• Reporter: Mihai Budiu
• Created: 08/Feb/24 00:25
• Updated: 06/May/24 22:19
• Resolved: 27/Feb/24 01:36

Description

For the following query:

SELECT format_date('%A %d %B %Y', '0001-01-01')

the BigQuery playground returns the following result:

Monday 01 January 1

However, Calcite returns the following result:

Saturday 01 Jan 1

There are actually two bugs here:

• the day of the week is wrong
• the month name is displayed incorrectly. The latter is because of the Locale.ROOT used in SimpleDateFormat.

Issue Links

• is related to: CALCITE-5619 Support PostgreSQL's TO_CHAR function
• is related to: CALCITE-5543 Implement BigQuery functions for parsing DATE, TIME, TIMESTAMP, DATETIME
• links to: GitHub Pull Request #3680