Silun Dong created CALCITE-7315:
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Summary: Support LEFT_MARK type for hash join in enumerable
convention
Key: CALCITE-7315
URL: https://issues.apache.org/jira/browse/CALCITE-7315
Project: Calcite
Issue Type: Improvement
Components: core, linq4j
Reporter: Silun Dong
Assignee: Silun Dong
In CALCITE-7031, we introduce a new join type: LEFT MARK, and left a TODO about
implementing the LEFT MARK JOIN in the enumerable convention.
An LEFT MARK JOIN will keep all rows from the left side and creates a new
attribute to mark a tuple as having join partners from right side or not. LEFT
MARK JOIN is typically generated by rewriting SOME/EXISTS/IN subqueries.
This ticket will add support for the LEFT MARK type to the hash join.
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