How to find hours between sysdate and max of timestamp field

Question

Hi,
Could someone help me out of this query,when iam running thIs query iam getting this error
and query is
Select trunc((Sysdate - MAX(LASTMODIFIED))*24)||':'||trunc(Mod((Sysdate-MAX(LASTMODIFIED))*24*60,60))
From STATUS_CLAIMS;
ERROR:ORA-00932:INCONSISTENT DATATYPES:EXPECTED NUMBER
GOT INTERVAL DAY TO SECOND
ACTUALLY I NEED HOURS FROM SYSDATE MINUS MAX(LASTMODIFIED) DATE,
WHERE LASTMODIFIED FIELD IS IN TIMESTAMP DATATYPE AND IT IS HAVING DEFAULT OF SYSTIMESTAMP
Any suggestions on what I am doing wrong would be greatly appreciated.
Regards,
Vikram

Answer 1

Hi,
I would use extract on interval datatype, then some to_char formating before concatenation :Scott@my11g SQL>!cat q.sql
col last_modified for A25
col delta for A30
col deltahour for 999999999
col deltamin for 999999999
col deltafmt for A8
with t(last_modified) as
     select to_timestamp('20120622 12:34:56.789','yyyymmdd hh24:mi:ssxff') from dual
     union all
     select to_timestamp('20120622 01:03:45.678','yyyymmdd hh24:mi:ssxff') from dual
     union all
     select to_timestamp('20120522 01:03:45.678','yyyymmdd hh24:mi:ssxff') from dual
------ end of sample data ------
select
     last_modified
     , cast(sysdate as timestamp)-last_modified delta
     , extract(hour from cast(sysdate as timestamp)-last_modified) deltahour
     , extract(minute from cast(sysdate as timestamp)-last_modified) deltamin
     ,to_char(extract(hour from cast(sysdate as timestamp)-last_modified),'fm00')
          || ':'
          || to_char(extract(minute from cast(sysdate as timestamp)-last_modified),'fm00') deltafmt
from t
Scott@my11g SQL>@q
LAST_MODIFIED             DELTA                           DELTAHOUR   DELTAMIN DELTAFMT
22/06/2012 12:34:56       +000000000 02:36:14.211000000           2         36 02:36
22/06/2012 01:03:45       +000000000 14:07:25.322000000          14          7 14:07
22/05/2012 01:03:45       +000000031 14:07:25.322000000          14          7 14:07But I'd feel safer with interval datatype as it wouldn't hide the potential days in the gap.