Timo Walther created FLINK-14983:
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Summary: Add interfaces for input type inference
Key: FLINK-14983
URL: https://issues.apache.org/jira/browse/FLINK-14983
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: Timo Walther
Assignee: Timo Walther
The [design
document|https://docs.google.com/document/d/1RM_-XvD25AldUOl7xRSvA3sascWBa1-Jze3i5mvb7WU/edit#]
around {{TypeInference}} already mentioned an {{InputTypesInference}} that
enables the derivation of missing or incomplete input signatures. The Calcite
equivalent is called {{SqlOperandTypeInference}}.
For FLIP-65, we will need to implement those interfaces as the planner needs
infer the {{DataType}}s out of logical types that come from the logical query.
This is also beneficial to support the {{NULL}} literal in the future.
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