SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function substringIndexUTF8 (children 1)
     ExpressionList (children 3)
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'富强，民主，文明\'
      Literal \'，\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal UInt64_0
