Oh, I got this one on my own :)
SQL> select target, sub_target,load, 2 case when target = prev_target and sub = prev_sub then load - lag(load) over (order by target, sub_target, ts) end incr_load 3 from 4 (select target, sub_target, ts, load, lag(target) over (order by target, sub_target, ts) prev_target, lag(sub) over (order by target, sub_target, ts) prev_sub 5 from sales_data); Thanks David for all. It was a great pleasure to work with you :) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Oracle PL/SQL" group. To post to this group, send email to Oracle-PLSQL@googlegroups.com To unsubscribe from this group, send email to oracle-plsql-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/Oracle-PLSQL?hl=en -~----------~----~----~----~------~----~------~--~---