AlterQuery  enum_nested_alter (children 2)
 ExpressionList (children 2)
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration tasks.errcategory (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Enum8 (children 1)
       ExpressionList (children 10)
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'undefined\'
          Literal UInt64_0
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'system\'
          Literal UInt64_1
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'generic\'
          Literal UInt64_2
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'asio.netdb\'
          Literal UInt64_3
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'asio.misc\'
          Literal UInt64_4
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'asio.addrinfo\'
          Literal UInt64_5
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'rtb.client\'
          Literal UInt64_6
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'rtb.logic\'
          Literal UInt64_7
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'http.status\'
          Literal UInt64_8
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'http.code\'
          Literal UInt64_9
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration tasks.status (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Enum8 (children 1)
       ExpressionList (children 3)
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'hello\'
          Literal UInt64_1
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'world\'
          Literal UInt64_2
        Function equals (children 1)
         ExpressionList (children 2)
          Literal \'goodbye\'
          Literal UInt64_3
 Identifier enum_nested_alter