initializing element id since it is check without initializing in constructor
@@ -32,7 +32,7 @@ public abstract class AbstractAggregationAttributeExecutor implements Expression
protected ExecutionPlanContext executionPlanContext;
protected int size;
protected String queryName;
- private String elementId;
+ private String elementId = null;
public AbstractAggregationAttributeExecutor(AttributeAggregator attributeAggregator,
ExpressionExecutor[] attributeExpressionExecutors,
