Lai Zhou created CALCITE-2973:
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Summary: make EnumerableMergeJoinRule to support a theta join
Key: CALCITE-2973
URL: https://issues.apache.org/jira/browse/CALCITE-2973
Project: Calcite
Issue Type: New Feature
Components: core
Affects Versions: 1.19.0
Reporter: Lai Zhou
Now the EnumerableMergeJoinRule only supports an inner and equi join.
If users make a theta-join query for a large dataset (such as 10000*10000),
the nested loop join process will take dozens of time than the sort-merge join
process .
So, if we can support merge-join rule for a theta join, it will bring a lot of
benefits .
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