Mysql Workbench 创建函数总是提示语法错误

用Mysql Workbench进行mysql函数编写时，总是错误，报错信息说时语法错误，但是别人用navicat就可以运行，查了好久知道要重置结束符来解决这个问题

一般这样就可以运行：

create function get_choose_number_fn(sno char(20)) 
returns int
reads sql data
begin
	declare rs int;
	select count(*) into rs
             From choose
             where student_no=sno;
return rs;
end;

delimiter $$
create function get_choose_number_fn(sno char(20)) 
returns int
reads sql data
begin
	declare rs int;
	select count(*) into rs
             From choose
             where student_no=sno;
return rs;
end;
$$
delimiter ;