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https://issues.apache.org/jira/browse/SPARK-51456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-51456:
-----------------------------------
Labels: pull-request-available (was: )
> Add the to_time() function
> --------------------------
>
> Key: SPARK-51456
> URL: https://issues.apache.org/jira/browse/SPARK-51456
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Max Gekk
> Assignee: Max Gekk
> Priority: Major
> Labels: pull-request-available
>
> The new function *to_time()* should return expr cast to a timestamp using an
> optional formatting.
> h4. Syntax
> {code:sql}
> to_time(expr [, fmt] )
> {code}
> h4. Arguments
> * expr: A STRING expression representing a time.
> * fmt: An optional format STRING expression.
> h4. Returns
> h4. A TIME\(n\). If n where n is derived from fmt.
> If fmt is supplied, it must conform with Datetime patterns.
> If fmt is not supplied, the function is a synonym for cast(expr AS TIME).
> If fmt is malformed or its application does not result in a well formed time,
> the function raises an error.
> To return NULL instead of an error in case of a malformed expr use
> try_to_time.
> h4. Examples
> {code:sql}
> > SELECT to_time('00:12:00');
> 00:12:00
> > SELECT to_time('12.10.05', 'hh.mm.ss');
> 12:10:05
> {code}
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