Comparing SQL data in the same table for two different dates

Question

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0
Hello,
We have a batch scheduling tool that automatically runs Oracle jobs and when it runs the jobs it stores a record from the instance in a table. I am trying to write a query that pulls up all of the jobs that ran today and compares them with what ran on the same day last week to find out what jobs didnt run today. So far I have the below but I can't get it to return anything. I am using Toad for this
select *
from xxcar_abat_instances
where trunc(to_date(start_datetime)) = trunc(sysdate-7)
  and completion_status = 'Success'
AND NOT EXISTS
  (select script_name
    from xxcar_abat_instances
   where trunc(to_date(start_datetime)) = trunc(sysdate)
     and completion_status = 'Success')Thank you

Answer 1

Hi,
964188 wrote:
It is a date
Such as
10/31/2012 11:55:03 PMThen, as Hoek says, you don't want TO_DATE. For example:
WHERE   TRUNC (start_datetime) = TRUNC (SYSDATE - 7) or the more efficient
WHERE   start_datetime >= TRUNC (SYSDATE - 7)
AND     start_datetime <  TRUNC (SYSDATE - 6)Also, it doesn't look like the EXISTS sub-query is corelated to the main query. That's almost certainly a mistake.
If you're still having trouble, post your revised query, a little sample data (CREATE TABLE and INSERT statements). Point out where that query is givimg the wrong results, and explain how to get te right results.
See the forum FAQ {message:id=9360002}