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https://issues.apache.org/jira/browse/CALCITE-5449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17683144#comment-17683144
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Julian Hyde commented on CALCITE-5449:
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[~tanclary], There are a few tests for {{EXTRACT}} in {{big-query.iq}}. I
uncommented them and got a couple of different internal errors in Calcite code;
they relate to a call to {{getMonotonicity}} and seem to indicate that operands
ordinals are messed up. I had assumed that the tests for {{EXTRACT}} in
{{SqlOperatorTest}} were sufficient, but evidently the Quidem-based test
exercises some functionality that is necessary but is broken. Can you take a
look, please? The end state is that those tests are all uncommented and working.
> Implement EXTRACT() Function for BigQuery
> -----------------------------------------
>
> Key: CALCITE-5449
> URL: https://issues.apache.org/jira/browse/CALCITE-5449
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Tanner Clary
> Assignee: Tanner Clary
> Priority: Major
>
> Implement BigQuery {{EXTRACT()}} Function. {{EXTRACT(part FROM
> date_expression)}} returns the value from the date_expression corresponding
> to the specified part. Calcite currently supports PostgreSQL' {{DATE_PART}}
> which has similar behavior.
> Example: {{SELECT EXTRACT(DAY FROM DATE '2013-12-25')}} would return 25.
> [BigQuery
> Docs|https://g3doc.corp.google.com/company/teams/googlesql/reference/date_functions.md#extract
> ]
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