DB2 SQL实现小计 总计汇总

SELECT 
DECODE(ID,1,TO_CHAR(DATA_PRD,'YYYYMMDD'),2,TO_CHAR(DATA_PRD,'YYYYMMDD'),3,'总计') 调度日期
,DECODE(ID,1,JOB_STS ,2,'小计'  ,3,'-') 作业状态
,COUNT(1) 作业数 
FROM DWMM.JOB_LOG AS T1,
(select 1 as ID FROM SYSIBM.DUAL
        union 
        select 2 FROM SYSIBM.DUAL
        union 
        select 3 FROM SYSIBM.DUAL
) AS T2
GROUP BY DECODE(ID,1,TO_CHAR(DATA_PRD,'YYYYMMDD'),2,TO_CHAR(DATA_PRD,'YYYYMMDD'),3,'总计')
,DECODE(ID,1,JOB_STS,2,'小计',3,'-')