sql - Oracle Set operator query -

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have sql query on oracle 11g returns count of whether record having id , status exists within +/- 15 minutes range in table.

now wish ignore current date adding condition and timestamp < trunc(sysdate).
however, cases record exists in todays date wish ignore date comparison check in query '2010-07-20 19:15:11' >= to_char(timestamp - (1/1440*15), 'yyyy-mm-dd hh24:mi:ss') , '2010-07-20 19:15:11' <= (to_char(timestamp + (1/1440*15), 'yyyy-mm-dd hh24:mi:ss'))

select count(1) count  master_one  id='123' , status= 'active'  , '2010-07-20 19:15:11' >= to_char(timestamp - (1/1440*15), 'yyyy-mm-dd hh24:mi:ss')  , '2010-07-20 19:15:11' <= (to_char(timestamp + (1/1440*15), 'yyyy-mm-dd hh24:mi:ss'))  union  select count(1) count  master_two  id='321' , status= 'active'  , '2010-07-20 19:15:11' >= to_char(timestamp - (1/1440*15), 'yyyy-mm-dd hh24:mi:ss')  , '2010-07-20 19:15:11' <= (to_char(timestamp + (1/1440*15), 'yyyy-mm-dd hh24:mi:ss'))

how do this?

the first problem query you're doing string comparison on date. use to_date instead of to_char , let oracle out.

select        to_date('2010-07-20 19:15:11', 'yyyy-mm-dd hh24:mi:ss') orig_date   , to_date('2010-07-20 19:15:11', 'yyyy-mm-dd hh24:mi:ss') - 1 / 24 / 4 fifteen_min_prior   , to_date('2010-07-20 19:15:11', 'yyyy-mm-dd hh24:mi:ss') + 1 / 24 / 4 fifteen_min_after dual;

output:

orig_date                 fifteen_min_prior         fifteen_min_after          ------------------------- ------------------------- -------------------------  20-jul-10 07:15:11 pm     20-jul-10 07:00:11 pm     20-jul-10 07:30:11 pm

then use can use dates in between condition in predicate. see oracle date "between" query.

i'm not quite clear mean "however, cases record exists in todays date wish ignore date comparison check in query." you'd written want exclude values current day. either you're excluding today's records or you're not.


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