根据客户需要,我们增加了一个统计表,用来汇总统计数据,统计数据的产生,需要根据一个基本表,动态执行sql语句.在存储过程中,动态生成sql语句然后执行,需要用到Execute Immediate命令.我想写一个通用的统计用存储过程,似乎不大好办,if语句的应用在所难免了.呵呵.
特此存档.
create or replace PRocedure P_INSERT_XT_TJ_MX(sDate in varchar2) is
--author:李春雷
--create time:2005.8.4
--purpose:更新xt_tj_mx表
sXh xt_tj.xh%type; --主表序号
sDwmc xt_tj.dwmc%type;
sDw xt_tj.dw%type;
sDwzd xt_tj.dwzd%type;
sTable xt_tj.hzbmc%type;
sSjzd xt_tj.sjzd%type;
sSqlStr varchar2(300);
iCount int;
cursor curSort is
select xh,dwmc,hzbmc,sjzd,dwzd,dw from xt_tj ;
begin
open curSort;
loop
fetch curSort into sXh,sDwmc,sTable,sSjzd,sDwzd,sDw;
exit when curSort%notfound;
sSqlStr := 'select count(*) from ' sTable ' where to_char('sSjzd',''''YYYYMM'')=:sDate and 'sDwzd
' in (select dwxh from xt_dw connect by prior dwxh = dwfxh start with dwxh =:sDw)';
Execute Immediate sSqlStr into iCount using sDate,sDw;
delete from xt_tj_mx where fxh=sXh and sjz=sDate;
insert into xt_tj_mx(xh,fxh,hzsm,sjz)values(SEQ_XT_TJ_MX.NEXTVAL,sXh,iCount,sDate);
commit;
end loop;
end P_INSERT_XT_TJ_MX;
