Re: sysdate - 90 mins query

select * from tbl_tmstmp
where to_date(to_char(tm_date) || tm_time, 'yyyymmddhh24:mi') >=

          sysdate - (90 * (1/(24*60)))

sarath kumar wrote:

> i hava a table tbl_tmstmp with date and time as 2
> different columns (tm_date number)and tm_time
> varchar2(6).
> select * from tbl_tmstmp;
> tmstmp_id tm_date tm_time
> -------- -------- -------
> 1 20020502 12:30
> 2 20020503 19:30
> 3 20020503 23:30
> 4 20020504 00:30
> 5 20020504 02:30
> 6 20020504 08:30
>
> i have requuirement to pickup the records which are
> sysdate - 90 minutes. Assuming the sysdate is 20020504
> and time is 03:00 AM i need to pick up the first 4
> records.
>
> is it possible without using the UNION as DBAS are
> picky about using UNIONS.
>
> thanks
> Srini.
>
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