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https://issues.apache.org/jira/browse/FLINK-17793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17110918#comment-17110918
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Timo Walther commented on FLINK-17793:
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Computed columns, atermarks, primary key are not needed in `TableSchema` in the
API. Also utility functions like `toPhysicalRowDataType` and `toRowDataType`.
All of this is just catalog related. Also utility functions like `toRowType` .
For the API, it can be an interface backed by LogicalType (not DataType anymore
because we drop legacy in 1.12). I think this topic is too complex to have it
in 1.11 but I will work on a little design document for discussion. We can
create a FLIP out of it, if needed.
> Replace TableSchema with dedicated CatalogSchema
> ------------------------------------------------
>
> Key: FLINK-17793
> URL: https://issues.apache.org/jira/browse/FLINK-17793
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
>
> The {{TableSchema}} is used for representing the schema of catalog table and
> the schema of a {{Table}} object and operation. We should split those
> responsibilities both for a cleaner API and long-term separation of concerns.
> Connectors should work on a CatalogSchema instead.
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