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;