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https://issues.apache.org/jira/browse/FLINK-35707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xintong Song updated FLINK-35707:
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Fix Version/s: (was: 2.0.0)
> Allow column definition in CREATE TABLE AS (CTAS)
> -------------------------------------------------
>
> Key: FLINK-35707
> URL: https://issues.apache.org/jira/browse/FLINK-35707
> Project: Flink
> Issue Type: Sub-task
> Reporter: Sergio Peña
> Assignee: Sergio Peña
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0-preview
>
>
> Allow defining new columns or overriding source column types on CTAS
> statements.
> For following syntax should be allowed:
> {noformat}
> CREATE TABLE table_name [( <column_definition>[, ...n] )]
> [WITH (table_properties)]
> AS SELECT query_expression;
> {noformat}
> If new columns are defined in the create clause, then the columns should
> appear at the beginning of the resulted sink schema. Columns of the query
> source schema should appear at the end.
> If source columns are re-defined in the create clause, then the columns
> should appear in the same order as the query schema. Column types may be
> overridden, but implicit casting rules should be validated and applied
> (similar to iNSERT/SELECT statements) to make sure the SELECT query will be
> able to run and write the data to the sink table.
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