jinxing64 commented on a change in pull request #1515: fix some correlated
subquery case's comment error
URL: https://github.com/apache/calcite/pull/1515#discussion_r335986511
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File path:
core/src/main/java/org/apache/calcite/rel/rules/SubQueryRemoveRule.java
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@@ -235,9 +235,9 @@ private RexNode rewriteSome(RexSubQuery e,
Set<CorrelationId> variablesSet,
// end as v
// from emp as e
// left outer join (
- // select max(deptno) as m, count(*) as c, count(deptno) as d,
+ // select name, max(deptno) as m, count(*) as c, count(deptno) as d,
// "alwaysTrue" as indicator
- // group by name from emp) as q on e.name = q.name
+ // from emp group by name) as q on e.name = q.name
Review comment:
The main idea of this change is to add a `name` in the select list, because
`name` is referenced in the join condition.
Yes, this change seems too small, shall we hold ?
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