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Posted to dev@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2019/10/11 08:47:00 UTC
[jira] [Created] (FLINK-14367) Fully support for converting RexNode
to Expression
Jark Wu created FLINK-14367:
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Summary: Fully support for converting RexNode to Expression
Key: FLINK-14367
URL: https://issues.apache.org/jira/browse/FLINK-14367
Project: Flink
Issue Type: Improvement
Components: Table SQL / Planner
Reporter: Jark Wu
Currently, the {{RexNodeToExpressionConverter}} in both planners are not fully support. There're many RexNodes can not be converted to Expressions.
1) RexFieldAccess -> GET call
2) Literals in interval types and complex types
3) TRIM(BOTH/LEADING/HEADING, ..)
...
We should have a comprehensive tests to cover all cases. A good idea is to verify with {{ExpressionConverter}} together.
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