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https://issues.apache.org/jira/browse/FLINK-21991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu closed FLINK-21991.
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Fix Version/s: (was: 1.13.0)
Resolution: Invalid
This is by design. We didn't follow the behavior of Calcite. Length 1 is more
SQL standard compliant. You can see more information in Javadoc of
{{org.apache.flink.table.types.logical.VarCharType}}.
> flink varchar which exposes to users it not unified
> ---------------------------------------------------
>
> Key: FLINK-21991
> URL: https://issues.apache.org/jira/browse/FLINK-21991
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.13.0
> Reporter: jackylau
> Priority: Major
>
> sql VARCHAR: If no length is specified, n is equal to 1. which is not right.
> calcite will transform the varchar to string
> {code:java}
> SqlDataTypeSpec type = regularColumn.getType();
> boolean nullable = type.getNullable() == null ? true :
> type.getNullable();
> RelDataType relType = type.deriveType(sqlValidator,
> nullable);
> {code}
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