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https://issues.apache.org/jira/browse/FLINK-21456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17289089#comment-17289089
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Timo Walther commented on FLINK-21456:
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It is not only timestamp but also decimals. What is missing a well-defined
string representation of all data types. For some logical types, I already
added a specification to the JavaDocs but ROW, MAP, MULTISET etc. are missing.
> TableResult#print() should correctly stringify values of TIMESTAMP type in
> SQL format
> -------------------------------------------------------------------------------------
>
> Key: FLINK-21456
> URL: https://issues.apache.org/jira/browse/FLINK-21456
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: Jark Wu
> Priority: Major
>
> Currently {{TableResult#print()} simply use {{Object#toString()}} as the
> string representation of the fields. This is not SQL compliant, because for
> TIMESTAMP and TIMESTAMP_LZ, the string representation should be {{2021-02-23
> 17:30:00}} instead of {{2021-02-23T17:30:00Z}}.
> Note: we may need to update {{PrintUtils#rowToString(Row)}} and also SQL
> Client which invokes this method.
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