Case in Where

Question

select * from table where rn = case when (rn =>1 and transtype =2) then rn =>1 else rn =1 EndSome please help me with this case statement above. I want a case if for all rn =>1 trans_type is 2(check if it 2 for all rn=>1) then use rn =>1 if trans_type is not 2 then use rn =1. Help me with SQL. Thanks..
This is the SQL where rn is coming from
with CTE AS
                               SELECT
                                 ROW_NUMBER () OVER (PARTITION BY b.account
                                order by b.TRANS_DATE ASC,b.trans_type desc  ) rn
                                , b.ACCOUNT
                                 FROM ( UNICA.DSI_SUBS_STOP_START_DRW) b
                     SELECT                     
                       ACCOUNT  from CTE where rn=1---- i need a case here
                      Edited by: varun on May 16, 2011 1:47 PM

Answer 1

try this plz..
with CTE AS
                               SELECT
                                 ROW_NUMBER () OVER (PARTITION BY b.account
                                order by b.TRANS_DATE ASC,b.trans_type desc  ) rn
                                , b.ACCOUNT
                                 FROM ( UNICA.DSI_SUBS_STOP_START_DRW) b
                     SELECT                     
                       ACCOUNT  from CTE where rn=case when (rn =1 and trans_type =2) then 1 else 1 End;Edited by: user2361373 on May 16, 2011 1:56 PM