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https://issues.apache.org/jira/browse/CALCITE-6252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17815810#comment-17815810
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Mihai Budiu commented on CALCITE-6252:
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I think this is a BigQuery specific problem. It should be independent on the
other two issues, which are generic Calcite issues.
BigQuery interprets all dates in the Gregorian calendar. This function should
respect this.
> 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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