详解Oracle游标的简易用法
(编辑:jimmy 日期: 2024/11/3 浏览:3 次 )
下面看下Oracle游标的简易用法,具体代码如下所示:
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;*/ --写日志 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 游标循环添加删除更新。
知识点扩展:
Oracle游标简单示例
使用游标打印员工姓名和薪水
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; /
带参数的游标
使用游标打印某部门号的所有员工姓名
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; /
总结
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