SQL开发知识：详解Oracle游标的简易用法
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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