SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function substringIndexUTF8 (children 1)
     ExpressionList (children 3)
      Literal \'富强，民主，文明\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'，\'
      Literal UInt64_2
