korlov42 commented on code in PR #2443:
URL: https://github.com/apache/ignite-3/pull/2443#discussion_r1300983655
##########
modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/rel/set/IgniteReduceIntersect.java:
##########
@@ -34,55 +34,68 @@
* Physical node for REDUCE phase of INTERSECT operator.
*/
public class IgniteReduceIntersect extends IgniteIntersect implements
IgniteReduceSetOp {
+
+ private final int inputsNum;
Review Comment:
well, the truth is we don't care about intermediate operators, because they
either are not changing row type -- then deduction will be correct, -- or plan
is not correct at all, since reduce node is expecting rows to be in exact
format defined by its MAP counterpart.
Seems like both `IgniteReduceIntersect` and `IgniteReduceMinus` should have
`aggregateFieldsCount` implemented like
```
public int aggregateFieldsCount() {
return getInput(0).getRowType().getFieldCount();
}
```
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