MySQL 8.0.30
Source Code Documentation
my_command.h File Reference

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Enumerations

enum  enum_server_command {
  COM_SLEEP , COM_QUIT , COM_INIT_DB , COM_QUERY ,
  COM_FIELD_LIST , COM_CREATE_DB , COM_DROP_DB , COM_REFRESH ,
  COM_DEPRECATED_1 , COM_STATISTICS , COM_PROCESS_INFO , COM_CONNECT ,
  COM_PROCESS_KILL , COM_DEBUG , COM_PING , COM_TIME ,
  COM_DELAYED_INSERT , COM_CHANGE_USER , COM_BINLOG_DUMP , COM_TABLE_DUMP ,
  COM_CONNECT_OUT , COM_REGISTER_SLAVE , COM_STMT_PREPARE , COM_STMT_EXECUTE ,
  COM_STMT_SEND_LONG_DATA , COM_STMT_CLOSE , COM_STMT_RESET , COM_SET_OPTION ,
  COM_STMT_FETCH , COM_DAEMON , COM_BINLOG_DUMP_GTID , COM_RESET_CONNECTION ,
  COM_CLONE , COM_SUBSCRIBE_GROUP_REPLICATION_STREAM , COM_END
}
 A list of all MySQL protocol commands. More...
 

Enumeration Type Documentation

◆ enum_server_command

A list of all MySQL protocol commands.

These are the top level commands the server can receive while it listens for a new command in dispatch_command

Warning
Add new commands to the end of this list, otherwise old servers won't be able to handle them as 'unsupported'.
Enumerator
COM_SLEEP 

Currently refused by the server.

See dispatch_command. Also used internally to mark the start of a session.

COM_QUIT 

See COM_QUIT.

COM_INIT_DB 

See COM_INIT_DB.

COM_QUERY 

See COM_QUERY.

COM_FIELD_LIST 

Deprecated.

See COM_FIELD_LIST

COM_CREATE_DB 

Currently refused by the server.

See dispatch_command

COM_DROP_DB 

Currently refused by the server.

See dispatch_command

COM_REFRESH 

Deprecated.

See COM_REFRESH

COM_DEPRECATED_1 

Deprecated, used to be COM_SHUTDOWN.

COM_STATISTICS 

See COM_STATISTICS.

COM_PROCESS_INFO 

Deprecated.

See COM_PROCESS_INFO

COM_CONNECT 

Currently refused by the server.

COM_PROCESS_KILL 

Deprecated.

See COM_PROCESS_KILL

COM_DEBUG 

See COM_DEBUG.

COM_PING 

See COM_PING.

COM_TIME 

Currently refused by the server.

COM_DELAYED_INSERT 

Functionality removed.

COM_CHANGE_USER 

See COM_CHANGE_USER.

COM_BINLOG_DUMP 

See COM_BINLOG_DUMP.

COM_TABLE_DUMP 
COM_CONNECT_OUT 
COM_REGISTER_SLAVE 
COM_STMT_PREPARE 

See COM_STMT_PREPARE.

COM_STMT_EXECUTE 

See COM_STMT_EXECUTE.

COM_STMT_SEND_LONG_DATA 

See COM_STMT_SEND_LONG_DATA.

COM_STMT_CLOSE 

See COM_STMT_CLOSE.

COM_STMT_RESET 

See COM_STMT_RESET.

COM_SET_OPTION 

See COM_SET_OPTION.

COM_STMT_FETCH 

See COM_STMT_FETCH.

COM_DAEMON 

Currently refused by the server.

See dispatch_command. Also used internally to mark the session as a "daemon", i.e. non-client THD. Currently the scheduler and the GTID code does use this state. These threads won't be killed by KILL

See also
Event_scheduler::start, init_thd, kill_one_thread, Find_thd_with_id
COM_BINLOG_DUMP_GTID 
COM_RESET_CONNECTION 

See COM_RESET_CONNECTION.

COM_CLONE 
COM_SUBSCRIBE_GROUP_REPLICATION_STREAM 
COM_END 

Not a real command.

Refused.