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Can't seem to figure this out. Just need the difference in minutes between 2 oracle timestamp columns.

END_TS                                  START_TS
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
11-NOV-13 01.52.14.000000 PM                            11-NOV-13 01.51.14.000000 PM
11-NOV-13 02.20.47.000000 PM                            11-NOV-13 02.19.47.000000 PM
18-NOV-13 12.44.54.000000 PM                            18-NOV-13 12.34.02.000000 PM
22-NOV-13 12.02.09.000000 AM                            22-NOV-13 12.02.08.000000 AM
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closed as off-topic by Mark Storey-Smith, Paul White, RolandoMySQLDBA, ypercube, Max Vernon Feb 26 at 5:05

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2 Answers 2

Assuming your table is called TS:

SELECT EXTRACT (DAY FROM (end_ts-start_ts))*24*60*60+
EXTRACT (HOUR FROM (end_ts-start_ts))*60*60+
EXTRACT (MINUTE FROM (end_ts-start_ts))*60+
EXTRACT (SECOND FROM (end_ts-start_ts))
FROM TS;

Common sense, to be honest.

(May need an EXTRACT(YEAR too).

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select
  round(
    (cast(current_timestamp as date) - cast(<other_timestamp> as date))
    * 24 * 60
  ) as diff_minutes
from <some_table>;

This is what I used to calculate the difference between the current timestamp and a heart beat table entry for latency monitoring.

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