presto-main/src/main/java/io/prestosql/sql/analyzer/SemanticExceptions.java/SemanticExceptions/ambiguousAttributeException
class SemanticExceptions:    public static PrestoException ambiguousAttributeException(Expression node, QualifiedName name)
    {
        throw semanticException(AMBIGUOUS_NAME, node, "Column '%s' is ambiguous", name);
    }