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https://issues.apache.org/jira/browse/TRAFODION-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408524#comment-16408524
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ASF GitHub Bot commented on TRAFODION-3001:
-------------------------------------------
Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/trafodion/pull/1486#discussion_r176223257
--- Diff:
docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc ---
@@ -150,67 +150,109 @@ See the individual entry for the function.
== Datetime Functions
These functions use either a datetime value expression as an argument or
-return a result of datetime data type:
+return a result of DATETIME, VALUE or CHAR:
--- End diff --
The old text was correct. It categorized datetime functions as being those
that either accept datetimes or produce them. The new change, though, would
allow SUBSTRING as a Datetime function (since it produces a CHAR output).
> Add an Overview of *Datetime Functions* in *Trafodion SQL Reference Manual*
> ---------------------------------------------------------------------------
>
> Key: TRAFODION-3001
> URL: https://issues.apache.org/jira/browse/TRAFODION-3001
> Project: Apache Trafodion
> Issue Type: Documentation
> Reporter: Liu Yu
> Assignee: Liu Yu
> Priority: Major
>
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