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oralce建立临时表问题

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悬赏园豆:10 [已关闭问题] 关闭于 2014-04-16 22:47
-- Created on 2012-2-25 by ADMINISTRATOR 
declare
-- Local variables here
cursor cur_jg is
select is_jg,spid
from spkfk
where spid in (select spid
from xt_sjd_mx
where djbh in ('XSC00425794',
'XSC00426199',
'XSC00426159',
'XSC00425793',
'XSC00425899',
'XSC00425802',
'XSC00426007',
'XSC00425810'));
v_jg varchar2(4);
v_spid varchar2(40);
sql_str varchar2(400);
v_ls int;
v_num int;
/* sql_new_str varchar2(200);*/
/* ls_table varchar2(4);*/
begin

-- Test statements here
sql_str:= 'CREATE GLOBAL TEMPORARY TABLE ls_table(
a varchar2(4) not null,
b varchar2(40))
ON COMMIT PRESERVE ROWS
';
execute immediate sql_str;
open cur_jg;
loop
fetch cur_jg
into v_jg, v_spid;
exit when cur_jg%notfound;
sql_str:='insert into ls_table values('''||v_jg||''','''||v_spid||''')';
execute immediate sql_str;
sql_str:='commit';
execute immediate sql_str;
--update spkfk set is_jg = '否' where spid = v_spid;
end loop;
close cur_jg;

for v_num in 1..9 loop
sql_str:='select a into v_ls from ls_table';
execute immediate sql_str;
dbms_output.put_line(v_ls);
end loop;
exception
when others then
dbms_output.put_line(substr(sqlerrm,1,200));
end;
 ON   COMMIT   PRESERVE   ROWS

想建个历史表把一些数据保存下,然后在下边的for循环里,在单独显示出来,上边这种写法应该是在同一session里都可以取到值吧,为什么我循环出来的就全为null呢?我没写过临时表,请大侠指点下,谢谢。



就叫我好人吧的主页 就叫我好人吧 | 初学一级 | 园豆:5
提问于:2012-02-27 12:17
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