How to combinate the select options using 'when........(.....or......) '

Question

Dears,
I used select statement like
select rnn
         pucustctycode
    into table gt_zgrrnnh
         from zgrrnnh
         where rnn           in s_rnn
         and   lrcdate       gt gv_update
         and   deleteind     eq space.
and
select rnn
         pucustctycode
  appending table gt_zgrrnnh
         from zgrrnnh
         where rnn           in s_rnn
         and   lrcdate       eq gv_update
         and   lrctime       gt gv_uptime
         and   deleteind     eq space.
in my program. and now i want to combinate them using just one select.
and the different select conditions is lrdate and lrtime. and the firest selections has no limit to lrtime, but just limit to lrdate.
Anyone could help me how to use    select ............when ..........(...........or............)?
Thanks a lot.
Julie.

Answer 1

Change your select query like this:
Select time also, u have to change your internal table Strucutre.
SELECT   rnn
               pucustctycode
               lrctime
    INTO TABLE gt_zgrrnnh
    FROM zgrrnnh
         WHERE  rnn               IN   s_rnn
         AND      lrcdate         GE  gv_update
         AND      deleteind      EQ  space.
from this you will all the data irrespective of time , but you have time field in your internal table .
Now Loop at your internal table and delete those records whoes LRCTIME is less than GV_UPTIME.
This is one way, i am sure there can be many ways to do this.
One has to keep trying...
Let me know ,if you face further issue..
Regards,
Mayank