SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function replaceRegexpAll (children 1)
       ExpressionList (children 3)
        Function materialize (children 1)
         ExpressionList (children 1)
          Literal \'aazq\'
        Literal \'z*\'
        Literal \'\'
      Literal \'aaq\'
