rubenada opened a new pull request #1269: [CALCITE-3109] Improvements on algebraic operators to express recursive queries (RepeatUnion & TableSpool) URL: https://github.com/apache/calcite/pull/1269 Jira ticket: [CALCITE-3109](https://issues.apache.org/jira/browse/CALCITE-3109) Pending details from [CALCITE-2812](https://issues.apache.org/jira/browse/CALCITE-2812) to make the RepeatUnion and TableSpool more consistent: TableSpool: - Replace `String tableName` with `RelOptTable table`. RepeatUnion: - Rename `maxRep` as `iterationLimit`. Change this field to allow all integer values, and treat all negative values as "no limit". - EnumerableDefaults#repeatUnionAll: make close method idempotent
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