Timo Walther created FLINK-25769:
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Summary: Add internal functions and basic function versioning
Key: FLINK-25769
URL: https://issues.apache.org/jira/browse/FLINK-25769
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API, Table SQL / Planner
Reporter: Timo Walther
Assignee: Timo Walther
As mentioned in FLIP-190:
We keep the old function definition around under an internal name. The physical
plan after restore might look similar to:
{code}
== Optimized Physical Plan ==
Calc(select=[$TO_TIMESTAMP_LTZ$1(f0)])
{code}
{{$TO_TIMESTAMP_LTZ$1}} has been returned by the ModuleManager.
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