[begin_label:] LOOP statement(s) END LOOP [end_label]
          LOOP implements a simple loop construct,
          enabling repeated execution of a particular statement or group
          of statements. The statements within the loop are repeated
          until the loop is exited, usually this is accomplished with a
          LEAVE statement.
        
          begin_label and
          end_label must be the same, if both are
          specified.
        
This is a translation of the MySQL Reference Manual that can be found at dev.mysql.com. The original Reference Manual is in English, and this translation is not necessarily as up to date as the English version.

