T-Sql statement terminator.

TSql.StatementTerminator.sql

-- Then statement of a if can be terminated by ;
if 0 = 1 print 'boo';
else print 'murf';
 
-- ; can appear after a end. Any number of times (empty statements).
if 0 = 1
begin
print 'boo';
end;
else
begin
print 'murf';
-- This is an empty statement.
;;
end;;;