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sysdate - 90 mins query

From: sarath kumar <sarath_kumar0_at_yahoo.com>
Date: Sat, 04 May 2002 06:38:18 -0800
Message-ID: <F001.00458004.20020504063818@fatcity.com>


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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Author: sarath kumar
  INET: sarath_kumar0_at_yahoo.com
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