SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (alias x) (children 1)
     ExpressionList (children 2)
      Literal \'1,,\'
      Function replaceRegexpOne (children 1)
       ExpressionList (children 3)
        Literal \'1,,\'
        Literal \'^[,]*|[,]*$\'
        Literal \'\'