Oracle PL/SQL学习之基础篇（2）--例外

set serveroutput on
declare
    cursor cemp is select ename from emp where deptno=50;
    
    pename emp.ename%type;
    
    --self define exception
    self_no_data_found exception;
begin
    open cemp;
    
    fetch cemp into pename;
    if cemp%notfound then
        --throw self define exception
        raise self_no_data_found;
    end if;
exception
   when self_no_data_found then
      dbms_output.put_line(‘执行了自定义异常！‘);
      if cemp%isopen then
         dbms_output.put_line(‘close cursor！‘);
         close cemp;
      end if;
   when others then
      dbms_output.put_line(‘执行了others异常！‘);
      if cemp%isopen then
         close cemp;
      end if;
end;
/