 !--a11y-->
!--a11y--> Method cmd
 Method cmd 
cmd is a method of the Loader class.
With this method
you send a Loader command or an SQL statement to the Loader server (see
Loader,  Commands and SQL
Statements).
Commands and SQL
Statements).
cmd (cmd_string)
| cmd_string | Loader command or SQL statement | 
Result:
● Successful execution: result of the Loader command or SQL statement
● Error: exception of the class LoaderError
