Kurt Young created FLINK-7987:
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Summary: Use RexBuilder when converting Expression to RexNode
Key: FLINK-7987
URL: https://issues.apache.org/jira/browse/FLINK-7987
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Kurt Young
Currently, when converting {{Expression}} to {{RexNode}}, we passed in a
{{RelBuilder}}, which is more complex to construct than {{RexBuilder}}. E.g. we
need to push a fake table and a fake select node into RelBuilder, in order to
get input type information.
I think in this case, {{RexBuilder}} will be enough for generating {{RexNode}}.
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