MySQL  8.0.12
Source Code Documentation
COM_SET_OPTION

Sets options for the current connection

COM_SET_OPTION enables and disables server capabilities for the current connection.

Note
Only CLIENT_MULTI_STATEMENTS can be set to a value defined in enum_mysql_set_option.
Returns
OK_Packet on success, ERR_Packet otherwise.
Payload
TypeNameDescription
int<1> status [0x1A] COM_SET_OPTION
int<2> option_operation One of enum_mysql_set_option
See also
mysql_set_server_option, mysql_parse