Timo Walther created FLINK-12996:
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Summary: Add predefined type validators, strategies, and
transformations
Key: FLINK-12996
URL: https://issues.apache.org/jira/browse/FLINK-12996
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: Timo Walther
Assignee: Timo Walther
FLINK-12924 introduced new interfaces for performing type inference. We need a
set of predefined type validators, strategies, and transformations implemented
with the new interfaces in order to represent the old type checking logic.
Those interfaces can be inspired by Calcite's
{{org.apache.calcite.sql.type.ReturnTypes}},
{{org.apache.calcite.sql.type.OperandTypes}}, and
{{org.apache.calcite.sql.type.SqlTypeTransforms}}.
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