dssysolyatin commented on code in PR #4926:
URL: https://github.com/apache/calcite/pull/4926#discussion_r3263611631
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core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -3135,7 +3135,11 @@ private void registerQuery(
forceNullable);
operands = call.getOperandList();
for (int i = 0; i < operands.size(); i++) {
- registerOperandSubQueries(parentScope, call, i);
+ // Use lambdaScope for the expression body (operand 1) so that
+ // nested lambdas can resolve outer lambda parameters via the
+ // scope chain, rather than treating them as table column names.
+ registerOperandSubQueries(
+ i == 1 ? lambdaScope : parentScope, call, i);
Review Comment:
Oh, sorry. We can not write like that, because `registerOperandSubQueries`
accept ordinal as parameter. But question about loop is still valid
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