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 \'\'