SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function arrayCumSum (alias x) (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 2)
        Function toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal Float64_1
          Literal UInt64_4
        Function toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal Float64_1
          Literal UInt64_4
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier x