Get only one record for an id for a date if multiple record exists

Question

Hi,
I need help with below mentioned scenario.
DB Version: 11.2.0.3.0.
Requirement:
Fetch account records that were created after last run of program
Get latest record for an account on a given date if there are multiple records for same account.
If there is a gap of more than 1 day from last run of program, then get latest record for an account for each date if there are multiple records for same account.
Create table t_test
  Id           number not null,
  cust_id      number not null,
  cust_Acct_id number not null,
  ins_date     date   not null
insert into t_test values
(1, 12345, 678905, to_date('05/31/2012 12:05:10 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(2, 12345, 678905, to_date('05/31/2012 05:25:46 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(3, 12345, 678905, to_date('05/31/2012 11:48:00 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(4, 12345, 678905, to_date('06/01/2012 12:05:10 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(5, 12345, 678905, to_date('06/01/2012 05:25:46 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(6, 12345, 678905, to_date('06/01/2012 11:48:00 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(7, 12345, 678905, to_date('06/02/2012 12:05:10 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(8, 12345, 678905, to_date('06/02/2012 05:25:46 PM','MM/DD/YYYY HH:MI:SS PM'));
insert into t_test values
(9, 12345, 678905, to_date('06/02/2012 11:48:00 PM','MM/DD/YYYY HH:MI:SS PM'));
create table t_log
  id            number not null,
  prgrm_id      number not null,
  last_run_date date   not null
insert into t_log values
(1,1009,to_date('5/30/2012 07:05:12 AM','MM/DD/YYYY HH:MI:SS PM'));Result required:
id cust_id cust_acct_id ins_date
3 12345 678905 '05/31/2012 11:48:00 PM'
6 12345 678905 '06/01/2012 11:48:00 PM'
9 12345 678905 '06/02/2012 11:48:00 PM'
I tried below sql but it will return only id 9 record.
select
    id,
    cust_id,
    cust_acct_id,
    ins_date
from
    select
        id,
        cust_id,
        cust_acct_id,
        ins_date,
        row_number() over (partition by cust_acct_id order by ins_date desc) rn
    from
        t_test t
    where
        t.ins_date > (
                      select
                          last_run_date
                      from
                          t_log l
                      where
                          l.prgrm_id = 1009
where rn = 1;Thanks in advance.

Answer 1

Try:
SQL> select
  2      id,
  3      cust_id,
  4      cust_acct_id,
  5      ins_date
  6  from
  7      (   
  8      select
  9          t.id,
10          t.cust_id,
11          t.cust_acct_id,
12          t.ins_date,
13          row_number() over (partition by cust_acct_id, trunc(ins_date) order by ins_date desc) r
n
14      from
15          t_test t
16      ,   t_log l 
17      where
18          t.ins_date >= l.last_run_date
19      and l.prgrm_id = 1009
20      )
21  where rn = 1;
        ID    CUST_ID CUST_ACCT_ID INS_DATE
         3      12345       678905 31-05-2012 23:48:00
         6      12345       678905 01-06-2012 23:48:00
         9      12345       678905 02-06-2012 23:48:00But I now see that Bob already nailed it, while I was testing it ;)