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https://issues.apache.org/jira/browse/FLINK-19752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17218241#comment-17218241
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AT-Fieldless commented on FLINK-19752:
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Maybe we can set a default value for Decimal DataType, such as Decimal(30,6).
So in the mapping, _createLegacyType_ can not be used.
> Convert BigDicimal TypeInformation to DataTypes error
> -----------------------------------------------------
>
> Key: FLINK-19752
> URL: https://issues.apache.org/jira/browse/FLINK-19752
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System
> Affects Versions: 1.11.2
> Reporter: AT-Fieldless
> Priority: Major
> Labels: table-type
>
> As mentioned in [Flink-15485|https://github.com/apache/flink/pull/10774] when
> I use LegacyTypeInfoDataTypeConverter to convert BigDicimal to corresponsed
> DataTypes. It throws
> _org.apache.flink.table.types.logical.LegacyTypeInformationType cannot be
> cast to org.apache.flink.table.types.logical.DecimalType error_
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