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https://issues.apache.org/jira/browse/CALCITE-5360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17643744#comment-17643744
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Julian Hyde commented on CALCITE-5360:
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[~tanclary], I reviewed your PR, made suggestions, and also added a commit to
[julianhyde/5360-timestamp-add|https://github.com/julianhyde/calcite/tree/5360-timestamp-add];
feel free to cherry-pick.
> Implement BigQuery TIMESTAMP_ADD and TIMESTAMP_DIFF
> ---------------------------------------------------
>
> Key: CALCITE-5360
> URL: https://issues.apache.org/jira/browse/CALCITE-5360
> Project: Calcite
> Issue Type: Sub-task
> Components: core
> Reporter: TJ Banghart
> Assignee: Tanner Clary
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Calcite already supports TIMESTAMPADD and TIMESTAMPDIFF. We should try
> mapping the BQ style syntax to these already implemented functions.
> We did something similar for TIMESTAMP_TRUNC and TIME_TRUNC which
> conveniently mapped to FLOOR in
> [CALCITE-5269|https://issues.apache.org/jira/browse/CALCITE-5269]
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