Oracle一个简单的存储过程
Oracle一个简单的存储过程
/*定义过程参数*/
create or replace procedure snowlucky.graduateprocess(
tempzhengzhi in snowlucky.graduate.zhengzhi%type,
tempyingyu in snowlucky.graduate.yingyu%type,
tempzhuanye1 in snowlucky.graduate.zhuanye1%type,
tempzhuanye2 in snowlucky.graduate.zhuanye2%type,
tempzhuanye3 in snowlucky.graduate.zhuanye3%type,
temptotalscore in snowlucky.result.totalscore%type) as
/*定义graduaterecord为记录型变量，临时存放通过游标从graduate数据表中提取的记录*/
graduaterecord snowlucky.graduate%rowtype;
/*定义graduatetotalscore为数值型变量，统计总分*/
graduatetotalscore snowlucky.result.totalscore%type;
/*定义graduateflag为字符型变量，根据结果放入“落选”或“录取”，然后写入数据表result*/
graduateflag varchar2(4);
/*定义游标graduatecursor，存放的是所有的graduate数据表中的记录*/
cursor graduatecursor is
select * from snowlucky.graduate;
/*定义异常处理errormessage*/
errormessage exception;
/*开始执行*/
begin
/*打开游标*/
open graduatecursor;
/*如果游标没有数据，激活异常处理*/
if graduatecursor%notfound then
raise errormessage;
end if;
/*游标有数据，指针指向第一条记录，每执行fetch命令，就自动下移，循环执行到记录提取完毕为止*/
loop
fetch graduatecursor into graduaterecord;
/*计算总分*/
graduatetotalscore:=graduaterecord.yingyu+graduaterecord.zhengzhi+graduaterecord.zhuanye1+graduaterecord.zhuanye2+graduaterecord.zhuanye3;
/*判断单科和总分是否满足录取要求，若满足，graduateflag变量值为“录取”，否则为“落选”*/
if (graduaterecord.yingyu>=tempyingyu and
graduaterecord.zhengzhi>=tempzhengzhi and
graduaterecord.zhuanye1>=tempzhuanye1 and
graduaterecord.zhuanye2>=tempzhuanye2 and
graduaterecord.zhuanye3>=tempzhuanye3 and
graduatetotalscore>=temptotalscore) then
graduateflag:='录取';
else
graduateflag:='落选';
end if;
/*当游标数据提取完毕后，退出循环”*/
exit when graduatecursor%notfound;
/*向结果数据表result中插入处理后的数据*/
insert into snowlucky.result(bh,xm,lb,zhengzhi,yingyu,zhuanye1,zhuanye2,zhuanye3,totalscore,flag) values(graduaterecord.bh,graduaterecord.xm,graduaterecord.lb,graduaterecord.zhengzhi,graduaterecord.yingyu,graduaterecord.zhuanye1,graduaterecord.zhuanye2,graduaterecord.zhuanye3,graduatetotalscore,graduateflag);
end loop;
/*关闭游标*/
close graduatecursor;
/*提交结果*/
commit;
/*异常处理，提示错误信息*/
exception
when errormessage then
dbms_output.put_line('无法打开数据表');
/*程序执行结束”*/
end;
/*主程序mainprocess设计*/
/*定义6个入口变量，分别对应graduate数据表中的专业课和总分分数线*/
declare
score1 number(4,1);
score2 number(4,1);
score3 number(4,1);
score4 number(4,1);
score5 number(4,1);
scoretotal number(5,1);
/*将分数线赋值，在这里修改各值就代表不同的分数线*/
begin
score1:=50;
score2:=56;
score3:=60;
score4:=62;
score5:=64;
scoretotal:=325;
/*调用处理过程*/
snowlucky.graduateprocess(score1,score2,score3,score4,score5,scoretotal);
end;