It is possible to specify statements over multiple lines. When
automatically enabled when a block of statements starts like in
function definitions, if/then statements, for loops, and so on.
In SQL mode multiple line mode starts when the command
\ is issued.
Once multiple-line mode is started, the subsequently entered statements are cached.
mysql-sql> \ ... create procedure get_actors() ... begin ... select first_name from sakila.actor; ... end ... mysql-sql>