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https://issues.apache.org/jira/browse/CALCITE-6252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17815818#comment-17815818
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Julian Hyde commented on CALCITE-6252:
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Ah, thanks [~mbudiu], sounds like we're on the same page. The sensible choice
is to use the proleptic Gregorian for old dates. That is Calcite's goal, and is
almost certainly BigQuery's goal. So we're just talking about a bug, not
different specifications.
> BigQuery FORMAT_DATE uses the wrong calendar for Julian dates
> -------------------------------------------------------------
>
> Key: CALCITE-6252
> URL: https://issues.apache.org/jira/browse/CALCITE-6252
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.36.0
> Reporter: Mihai Budiu
> Priority: Minor
>
> For the following query:
> {code:sql}
> SELECT format_date('%A %d %B %Y', '0001-02-28')
> {code}
> the BigQuery playground returns the following result:
> {code}
> Monday 01 January 1
> {code}
> However, Calcite returns the following result:
> {code}
> Saturday 01 Jan 1
> {code}
> 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.
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