Count of a query in Unix environment and use sysdate

Question

hi,
i have a code below and i want this to be used in Unix env and i need to use sysdate where i hard coded the date but the time should remain as it is.
select count(type),type from ebizp.bchistevent
where (type = 'com.avolent.apps.event.LoginEvent' or type = 'com.avolent.apps.event.LogoutEvent')
and(to_char(createdt, 'dd/mm/yy hh24:mi s') between '28/01/13 08:00:00' and '28/01/13 09:00:00')
AND ( bucket = to_char(sysdate-1, 'YYYYMM') OR bucket = to_char(sysdate, 'YYYYMM') OR bucket = 0)
group by type
like it should be between 'sysdate 08:00:00' and 'sysdate 09:00:00')
please suggest.

Answer 1

Dates should be compared with dates values. Don't use to_char to compare date values.
And dont use "TYPE" as a column name - it is a reserved key word..
select count(type), type
from ebizp.bchistevent
where (
    type = 'com.avolent.apps.event.LoginEvent'
    or type     = 'com.avolent.apps.event.LogoutEvent'
AND createdt BETWEEN trunc(sysdate)+(8/24) AND trunc(sysdate)+(9/24)
and (
  bucket = to_char(sysdate-1, 'YYYYMM')
  or bucket    = to_char(sysdate, 'YYYYMM')
  or bucket    = 0
GROUP BY type;And you can simplify the query
select count(type), type
from ebizp.bchistevent
where type in
    ('com.avolent.apps.event.LoginEvent','com.avolent.apps.event.LogoutEvent')
AND createdt BETWEEN trunc(sysdate)+(8/24) AND trunc(sysdate)+(9/24)
and bucket in
     (to_char(sysdate-1, 'YYYYMM'),to_char(sysdate, 'YYYYMM'),'0')
GROUP BY type;Edited by: jeneesh on Feb 19, 2013 2:42 PM