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詳解Oracle游標(biāo)的簡(jiǎn)易用法

 更新時(shí)間:2019年08月22日 11:33:27   作者:深圳熱心市民  
這篇文章主要介紹了詳解Oracle游標(biāo)的簡(jiǎn)易用法,本文通過(guò)實(shí)例代碼給大家介紹的非常詳細(xì),具有一定的參考借鑒價(jià)值,需要的朋友可以參考下

下面看下Oracle游標(biāo)的簡(jiǎn)易用法,具體代碼如下所示:

create or replace procedure NW_DelYW(iOPERATION_ID number,
                 sUserID   varchar2) is
 sCurDJBH yw_operation_link.djbh%type;
 cursor table_yw(ywid yw_operation.id%type) is
  select * from yw_operation_link t1 where t1.operation_id = ywid;
begin
 for dr in table_yw(iOPERATION_ID) loop
  sCurDJBH := dr.djbh;
  --取得opercationid
  /*  select t1.operation_id
   into sOperationID
   from yw_operation_link t1
  where t1.djbh = sCurDJBH;*/

  --寫(xiě)日志
  insert into log_zfywinfo
   (DJBH,
    DJDL,
    DJXL,
    DLMC,
    XLMC,
    SLR,
    SLRID,
    SQRXM,
    FWZL,
    ZFRQ,
    ZFRID,
    zfr)
   select distinct sCurDJBH,
       t4.id,
       t3.id,
       t4.name,
       t3.name,
       t1.slry,
       t1.slryid,
       t1.SQRXM,
       t1.zl,
       sysdate,
       sUserID,
       (select tt.name from pw_user tt where tt.id=sUserID)
    from yw_operation t1
    join yw_operation_link t2
     on t2.operation_id = t1.ID
    join BUSINESS_TYPE t3
     on t3.id = t1.business_id
    join BUSINESS_CLASS t4
     on t4.id = t3.parent_id
    where t1.ID = dr.operation_id;
exception
 when others then
  rollback;
  dbms_output.put_line(sqlerrm);
end NW_DelYW;

Oracle使用cursor 游標(biāo)循環(huán)添加刪除更新。

知識(shí)點(diǎn)擴(kuò)展:

Oracle游標(biāo)簡(jiǎn)單示例

使用游標(biāo)打印員工姓名和薪水

set serveroutput on;
declare
cursor cemp is select ename,sal from emp;
cname emp.ename%type;
csal emp.sal%type;
begin
 open cemp;
 loop
  fetch cemp into cname,csal;
  exit when cemp%notfound;
  dbms_output.put_line(cname || '的薪水是' || csal);
 end loop;
end;
/ 

 帶參數(shù)的游標(biāo)

使用游標(biāo)打印某部門(mén)號(hào)的所有員工姓名

set serveroutput on;
declare 
cursor cemp(cno emp.deptno%type) is select ename from emp where emp.deptno = cno;
cname emp.ename%type;
begin
 open cemp(10);
 loop 
  fetch cemp into cname;
  exit when cemp%notfound;
  dbms_output.put_line(cname);
  
 end loop;
end;
/ 

總結(jié)

以上所述是小編給大家介紹的詳解Oracle游標(biāo)的簡(jiǎn)易用法,希望對(duì)大家有所幫助,如果大家有任何疑問(wèn)請(qǐng)給我留言,小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持!
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