oracle-按月、日、时分组查询统计数据，无数据补零

oracle-按月、日、时分组查询数据，为空的数据补零

------月

select  nvl(t1.tvalue, 0)  "data1" , t2.datevalue  "name"
  from  ( select  sum (t.TSAI03) tvalue, TO_CHAR(t.TSAI01,  'yyyy-mm' ) timevalue
          from  TSA009 t
         where  TO_CHAR(t.TSAI01,  'YYYY-MM-DD' )  like  '2012%'
           and  t.unit_code  like  '411500A0050000'
         group  by  TO_CHAR(t.TSAI01,  'yyyy-mm' )) t1,
       ( select  '2012-'  || lpad( level , 2, 0) datevalue
          from  dual
        connect  by  level  < 13) t2
 where  t1.timevalue(+) = t2.datevalue
 order  by  t2.datevalue

 

-----日

select  nvl(t1.tvalue, 0) "data1" , t2.datevalue "name"
  from  ( select  sum (t.TSAI03) tvalue,
               TO_CHAR(t.TSAI01, 'yyyy-mm-dd' ) timevalue
          from  TSA009 t
         where  TO_CHAR(t.TSAI01, 'YYYY-MM-DD' ) like  '2012-04%'
           and  t.unit_code like  '411500A0050000'
         group  by  TO_CHAR(t.TSAI01, 'yyyy-mm-dd' )) t1,
       ( select  '2012-04-'  || lpad( level , 2, 0) datevalue
          from  dual
        connect  by  level  < ( select  to_number(substr(last_day(to_date( '2012-04-10' ,
                                                                     'yyyy-mm-dd' )),
                                                    0,
                                                    2))
                              from  dual) + 1) t2
 where  t1.timevalue(+) = t2.datevalue
 order  by  t2.datevalue

 

----时

select nvl(t1.tvalue, 0) "data1" , t2.datevalue "name" from ( select sum (t.TSAJ03) tvalue, TO_CHAR(t.TSAJ01, 'yyyy-mm-dd hh24' ) timevalue from TSA010 t where TO_CHAR(t.TSAJ01, 'YYYY-MM-DD' ) like '2012-04-10%' and t.unit_code like '411500A0050000' group by TO_CHAR(t.TSAJ01, 'yyyy-mm-dd hh24' )) t1, ( select '2012-04-10 ' || lpad( level , 2, 0) datevalue from dual connect by level < 25) t2 where t1.timevalue(+) = t2.datevalue order by t2.datevalue

为避免原文丢失,特此转载自:https://www.cnblogs.com/GenghisKhan/archive/2012/07/10/2584571.html