Get the yesterday or last month data

Question

Hi ,
I've need a small help .
This is the scenario.
If today is 1st feb. so I need to get last month data.
if today is 30 th i need to get the current month data before 30 I mean 29 days data.
I have to do it automatically i mean i need to write case statement in my existing query by using sysdate and i have to get it .
pls help me out . Your help is greatly appreciated.
Thanks & Regards,
madhav.

Answer 1

Haven't tested it, but you could try something like
This gives you last months data if executed on the first day of the month otherwise this months data until the day before today
select *
from my_table
where my_date >= add_months(trunc(sysdate, 'MM'), sign(trunc(sysdate)-trunc(sysdate, 'MM'))-1)
and   my_date <trunc(sysdate)After I read your posting again, I guess you wanted something else
This query now gives you last months data if executed on the first day of the month otherwise the data of the day before today
select *
from my_table
where my_date >= (case when trunc(sysdate) = trunc(sysdate, 'MM') then add_months(trunc(sysdate, 'MM'), -1) else trunc(sysdate-1) end)
and   my_date <trunc(sysdate)Message was edited by:
Jens Petersen