Ruben Q L created CALCITE-4356:
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Summary: Support recursive queries in SqlToRel and RelToSql
converters
Key: CALCITE-4356
URL: https://issues.apache.org/jira/browse/CALCITE-4356
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Ruben Q L
Recursive queries were introduced via RepeatUnion operator (CALCITE-2812).
However, for the moment they can only be generated using directly a RelBuilder.
The purpose of this ticket it to support then on SQL by evolving
SqlToRelConverter (and RelToSqlConverter).
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