Syntax
------ 
DO expr [, expr] ...
 
Description
----------- 
 DO executes the expressions but does not return any
results. In most respects, DO is shorthand for
 SELECT expr, ..., but has the advantage that it is slightly
faster when you do not care about the result.
 
 DO is useful primarily with functions that have side
 effects, such as RELEASE_LOCK().
 

 
 
 
 
 
 
 

URL: https://mariadb.com/kb/en/do/