下面就是例子程序

--明细表打印予处理  通用报表：

procedure mx_print_common(pd_id in mx_pd_syn.pd_id%type,

p_pd_mxb_id IN mx_pd_mxb_syn.p_mxb_id%type,

p_dept_no IN sc_mxk.dept_code%type,

p1 sc_bz_syn.bz_code%type,

p2 sc_cjjc_syn.cjjc_code%type,

p3 sc_mxk.warehouse_num%type)

is

sql2 varchar2(500);             --存储查询语句

sql3 varchar2(500);             --存储查询条件

str1 sc_print_syn.a%type;   --存储车间进程

str2 sc_print_syn.b%type;   --存储班组(工艺、工序)进程

s_ip sc_print_syn.ip%type;

type cursor_type is ref cursor;

c1 cursor_type; type record_type is record(

pbom_id sc_mxk.pbom_id%type

);

r_c1 record_type; /*

注意上面红色的两行和蓝色的两行

红色的两行定义一个游标

蓝色的两行定义一个游标中将要返回的数据的数据结构

*/

cursor c2(p_pbom_id sc_mxk.pbom_id%type) is

select a.dd_count,b.gx_name,c.bz_name,d.cjjc_name

from sc_p_gx_syn a,sc_gx_syn b,sc_bz_syn c,sc_cjjc_syn d

where pbom_id = p_pbom_id

and a.gx_code=b.gx_code(+) and b.dept_code=p_dept_no

and a.bz_code=c.bz_code(+)  and b.dept_code=p_dept_no

and a.cjjc_code=d.cjjc_code(+)  and b.dept_code=p_dept_no;

r_c2 c2%rowtype;

BEGIN

s_ip :=sys_context('USERENV','IP_ADDRESS');

delete from sc_print_syn where ip=s_ip and p_id=pd_id;

commit;

--下面开始构造查询语句

sql2:='select distinct a.pbom_id from sc_mxk a';

sql3:=' where a.p_id=' || pd_id || ' and a.dept_code= ''' || p_dept_no || '''';

if  p_pd_mxb_id >0 then

sql2:=sql3 || ',mxk c ';

sql3:=sql3 || ' and c.m_mxb_id= ' || p_pd_mxb_id || ' and a.mxb_id = c.mxb_id';

end if;

if p1 is not null then

sql2:=sql2 || ',sc_p_gx_syn b';

sql3:=sql3 || ' and a.pbom_id=b.pbom_id  and b.bz_code = ''' || p1 || '''';

end if;

if p2 is not null then

sql2:=sql2 || ',sc_p_gx_syn b';

sql3:=sql3 || ' and a.pbom_id=b.pbom_id  and b.cjjc_code = '''  || p2 || '''';

end if;

if p3 is not null then

sql3:=sql3 || ' and a.warehouse_num = ''' || p3 || '''';

end if;

sql2:=sql2 || sql3;

--打开动态游标，再往下就都一样了

open c1 for sql2;

loop

fetch c1 into r_c1;

exit when c1%notfound;

str1:='';

str2:='';

--打开工序表进行处理

open c2(r_c1.pbom_id);

loop

fetch c2 into r_c2;

exit when c2%notfound; --没有记录退出

if r_c2.cjjc_name is not null then

str1 :=str1 || to_char(r_c2.cjjc_name);

end if;

if r_c2.bz_name is not null then

str2 := str2  || r_c2.bz_name  ||  to_char(r_c2.dd_count);

elsif r_c2.gx_name is not null then

str2 := str2  || to_char(r_c2.gx_name)  ||  to_char(r_c2.dd_count);

end if;

end loop;

close c2;

insert into sc_print_syn(a,b,ip,p_id,r_id)

values(str1,str2,s_ip,pd_id,r_c1.pbom_id);

COMMIT;

end loop;

close c1;

END mx_print_common;

当然，实现的方法一定很多，甚至可以用隐式游标。但是隐式游标中用动态查询语句也要费一些周折的。

作者：Northsnow

电子邮件：northsnow@163.com

blog：http://blog.csdn.net/precipitant

posted on 2008-05-27 09:17 xzc 阅读(10438) 评论(3)  编辑  收藏 所属分类: Oracle