存过及如何给变量赋值

####无参存过

create or replace procedure init_Income_EveMonth is
begin
  -- Created on 2016/9/6 by YANGQC 
  --每月初始化薪资表
  declare
    cursor salesset is
      select s.user_id,to_char(sysdate,'yyyy-mm') month
        from sys_salesman s
        left join sys_user u on s.user_id = u.user_id
       where u.status = 0
         and not exists (select 1
                from sys_income_main m
               where m.month = to_char(sysdate,'yyyy-mm')
                 and m.user_id = s.user_id);
    salary Integer;
  begin
    for salesman in salesset loop
    
      select nvl((select b.salary
                 
                   from sys_income_basicsalay b
                  where b.user_id = salesman.user_id
                    and b.flag = 0),0)
        into salary
        from dual;
      insert into sys_income_main m
        (m.id,USER_ID,month,BASIC_SALARY,ALLRESULT)
      values
        ((select max(m1.id) + 1 from sys_income_main m1),salesman.user_id,salesman.month,salary,salary);
    end loop;
    commit;
  end;
end init_Income_EveMonth;

上面是一个无参存过;

• 使用into给参数salary赋值,这个只适用于select语句查询出结果的情况;
• 存过格式如下:

create or replace procedure xxx
begin 
end xxx;

####有参存过

create or replace procedure test_parameter(emp_name in varchar2,dept_no out number ) is
begin
  dept_no:=2;
end test_parameter;

这个存过定义了输入和输出参数 测试该存过

-- Created on 2016/9/6 by YANGQC 
declare 
  -- Local variables here
  i integer:=20;
  x varchar2(20);
begin
  test_parameter(x,i);
   dbms_output.put_line('After swap: x = ' || x || ',i= ' ||i);
end;

• 输出结果:After swap: x =,i= 2 有参存过的输入和输出参数都不可缺少

（编辑：李大同）

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