All types of servers can return message results.
A message result set contains no fetchable results. Instead, a message has an ID, which an application can retrieve by calling ct_res_info(CS_MSGTYPE).
Message IDs in the range 1–32,767 are reserved for Adaptive Server Enterprise and Sybase internal use.
Application-defined message IDs must be in the range CS_USER_MSGID to CS_USER_MAX_MSGID.
If parameter values are associated with a message, they are returned as a separate parameter result set following the message result set. See “Processing parameter results”.
A message result set is not the same thing as a server
message. Server messages are generated in response to error conditions
or to indicate server conditions of interest. They are generally
handled within an application’s server-message callback. See Chapter 4, “Handling Errors and Messages.”
An application calls ct_res_info to retrieve a message ID.
Most synchronous applications use a program structure similar to the following one to process a message result set:
case CS_MSG_RESULT
ct_res_info to get the message ID
code to handle the message ID
end case
