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https://issues.apache.org/jira/browse/SPARK-57575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk updated SPARK-57575:
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Description:
h2. What
Support {{TimeType}} input in to_char / to_varchar so a TIME value can be
formatted to a string
with a pattern, consistent with the planned time_format (SPARK-54588) and the
existing
date/timestamp to_char.
h2. Scope
* Extend the to_char / ToCharacter datetime formatting path to accept
{{TimeType}} and format
time-of-day fields (HH/mm/ss plus fractional seconds), reusing TimeFormatter.
* Reject date-only pattern fields for a TIME input with a clear error.
h2. Relationship
* Complements time_format (SPARK-54588); the two should share the TimeFormatter
and produce
consistent output.
h2. Acceptance criteria
* to_char(time, fmt) formats correctly across precisions.
* Tests added in the to_char tests / string-function suites and SQL golden
files.
> Support the TIME data type in to_char/to_varchar formatting
> -----------------------------------------------------------
>
> Key: SPARK-57575
> URL: https://issues.apache.org/jira/browse/SPARK-57575
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 4.3.0
> Reporter: Max Gekk
> Priority: Major
>
> h2. What
> Support {{TimeType}} input in to_char / to_varchar so a TIME value can be
> formatted to a string
> with a pattern, consistent with the planned time_format (SPARK-54588) and the
> existing
> date/timestamp to_char.
> h2. Scope
> * Extend the to_char / ToCharacter datetime formatting path to accept
> {{TimeType}} and format
> time-of-day fields (HH/mm/ss plus fractional seconds), reusing
> TimeFormatter.
> * Reject date-only pattern fields for a TIME input with a clear error.
> h2. Relationship
> * Complements time_format (SPARK-54588); the two should share the
> TimeFormatter and produce
> consistent output.
> h2. Acceptance criteria
> * to_char(time, fmt) formats correctly across precisions.
> * Tests added in the to_char tests / string-function suites and SQL golden
> files.
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