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https://issues.apache.org/jira/browse/CALCITE-6527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17882145#comment-17882145
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Julian Hyde commented on CALCITE-6527:
--------------------------------------
Link to its jira.
By 'only date type' do you mean DATE as opposed to TIMESTAMP, or do you mean
days as opposed to years, months?
> Add DATE_ADD function (enabled in Spark library)
> ------------------------------------------------
>
> Key: CALCITE-6527
> URL: https://issues.apache.org/jira/browse/CALCITE-6527
> Project: Calcite
> Issue Type: New Feature
> Reporter: Caican Cai
> Priority: Major
> Labels: pull-request-available
>
> https://spark.apache.org/docs/3.5.2/sql-ref-functions-builtin.html#date-and-timestamp-functions
> {code:java}
> > SELECT date_add('2016-07-30', 1);
> 2016-07-31
> {code}
> Currently, date_add supports the addition of year, month, day and other
> types, but in Spark, only day date type is supported.
> {code:java}
> date_add(start_date, num_days) Returns the date that is `num_days`
> after `start_date`.
> {code}
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