clintropolis commented on a change in pull request #11853:
URL: https://github.com/apache/druid/pull/11853#discussion_r744019795
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File path: core/src/main/java/org/apache/druid/math/expr/ApplyFunction.java
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@@ -282,8 +246,9 @@ public ExprEval apply(LambdaExpr lambdaExpr, List<Expr>
argsExpr, Expr.ObjectBin
}
List<List<Object>> product = CartesianList.create(arrayInputs);
- CartesianMapLambdaBinding lambdaBinding = new
CartesianMapLambdaBinding(product, lambdaExpr, bindings);
- return applyMap(lambdaExpr, lambdaBinding);
+ CartesianMapLambdaBinding lambdaBinding = new
CartesianMapLambdaBinding(elementType, product, lambdaExpr, bindings);
+ ExpressionType lambdaType = lambdaExpr.getOutputType(lambdaBinding);
Review comment:
no, `ExpressionType.asArrayType` checks for nulls and `applyMap` will
use the type of the first element as the array type if the hint is null
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