The isql command history feature enables you to list, recall, and reissue past commands. The command history is loaded into memory when you start isql, and is updated whenever a new command is issued. If specified, isql saves the in-memory history to disk when isql shuts down.
Command history is specific to an isql session and not to
a connection; this allows you to track the command history even
if the session is dynamically migrated to a different server.