Konstantin Orlov created IGNITE-19992:
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Summary: Sql. Rework execution of 2-phase set operators
Key: IGNITE-19992
URL: https://issues.apache.org/jira/browse/IGNITE-19992
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Konstantin Orlov
As of now, both {{IntersectNode}} and {{MinusNode}} use complex structures as
result of MAP phase (see
{{org.apache.ignite.internal.sql.engine.exec.rel.AbstractSetOpNode.Grouping#getOnMapper}};
it emits rows cardinality of 2, where first column is entire group key, and
second column is an array of counters). This prevents us from migrating sql
runtime to BinaryTuple-based rows, because currently BinaryTuple does not
support nested structures.
Let's rework those node to inline group key and counters into plain row.
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