oracle 中文版基础培训教程

/*定义过程参数*/ create or replace procedure scott.graduateprocess( tempzhengzhi in scott.graduate.zhengzhi%type, tempyingyu in scott.graduate.yingyu%type, tempzhuanye1 in scott.graduate.zhuanye1%type, tempzhuanye2 in scott.graduate.zhuanye2%type, tempzhuanye3 in scott.graduate.zhuanye3%type, temptotalscore in scott.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 scott.graduate%rowtype; /*定义graduatetotalscore为数值型变量，统计总分*/ graduatetotalscore scott.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 scott.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 scott.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;