YiwenWu commented on code in PR #3856:
URL: https://github.com/apache/calcite/pull/3856#discussion_r1684216098
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core/src/main/java/org/apache/calcite/rel/rel2sql/RelToSqlConverter.java:
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@@ -397,7 +397,7 @@ private boolean isCommaJoin(Join join) {
public Result visit(Correlate e) {
final Result leftResult =
visitInput(e, 0)
- .resetAlias(e.getCorrelVariable(), e.getRowType());
+ .resetAlias(e.getCorrelVariable(), e.getInput(0).getRowType());
Review Comment:
It may be that fewer cases are used. Correlate is similar to Join, with
leftNode and rightNode, among which e.getInput(0) is equivalent to leftNode.
Therefore the `RowType` of e.getInput(0) is a subset of Correlate.
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