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https://issues.apache.org/jira/browse/CALCITE-5346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17626709#comment-17626709
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TJ Banghart edited comment on CALCITE-5346 at 10/31/22 5:19 PM:
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[~libenchao] pointed out in the mailing list that Flink does something similar
for {{{}STRING{}}}, {{{}BYTES{}}}, and TIMESTAMP_LTZ :
[https://github.com/apache/flink/blob/1c0534481c705c29b0e8eed3bdb421c188618b7a/flink-table/flink-sql-parser/src/main/codegen/includes/parserImpls.ftl#L1455]
SqlAlienSystemTypeNameSpec seems helpful here:
[https://github.com/apache/calcite/blob/b9c2099ea92a575084b55a206efc5dd341c0df62/core/src/main/java/org/apache/calcite/sql/SqlAlienSystemTypeNameSpec.java]
was (Author: tjbanghart):
[~libenchao] pointed out in the mailing list taht Flink does something similar
for {{{}STRING{}}}, {{{}BYTES{}}}, and {{TIMESTAMP_LTZ :
[https://github.com/apache/flink/blob/1c0534481c705c29b0e8eed3bdb421c188618b7a/flink-table/flink-sql-parser/src/main/codegen/includes/parserImpls.ftl#L1455]
}}
> Support for type aliases
> ------------------------
>
> Key: CALCITE-5346
> URL: https://issues.apache.org/jira/browse/CALCITE-5346
> Project: Calcite
> Issue Type: New Feature
> Reporter: Will Noble
> Assignee: Will Noble
> Priority: Major
>
> We would like to support some sort of type alias functionality in order to
> map certain [BigQuery
> types|https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types]
> to ISO types, e.g. {{STRING}} -> {{VARCHAR}}.
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