Timo Walther created FLINK-12710:
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Summary: Unify built-in and user-defined functions in the API
Key: FLINK-12710
URL: https://issues.apache.org/jira/browse/FLINK-12710
Project: Flink
Issue Type: New Feature
Components: Table SQL / API
Reporter: Timo Walther
Assignee: Timo Walther
Currently, there are three completely different stacks of functions: Table API
builtins, SQL builtins, and user-defined types.
Currently, both the Blink and the legacy planner define a separate list of
functions and implementations with different type system and type checking
logic.
The long-term goal of this issue is to unify all 6 different stacks into a
common one. This includes better support for type inference which relates to
FLINK-12251.
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