66 lines
4.3 KiB
HTML
66 lines
4.3 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8"?>
|
|||
|
|
<!DOCTYPE html
|
|||
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|||
|
|
<html lang="en-us" xml:lang="en-us">
|
|||
|
|
<head>
|
|||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|||
|
|
<meta name="security" content="public" />
|
|||
|
|
<meta name="Robots" content="index,follow" />
|
|||
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|||
|
|
<meta name="DC.Type" content="concept" />
|
|||
|
|
<meta name="DC.Title" content="Subtract timestamps" />
|
|||
|
|
<meta name="abstract" content="The result of subtracting one timestamp (TS2) from another (TS1) is a timestamp duration that specifies the number of years, months, days, hours, minutes, seconds, and microseconds between the two timestamps." />
|
|||
|
|
<meta name="description" content="The result of subtracting one timestamp (TS2) from another (TS1) is a timestamp duration that specifies the number of years, months, days, hours, minutes, seconds, and microseconds between the two timestamps." />
|
|||
|
|
<meta name="DC.subject" content="arithmetic operations using OPNQRYF command, timestamp, arithmetic using OPNQRYF command" />
|
|||
|
|
<meta name="keywords" content="arithmetic operations using OPNQRYF command, timestamp, arithmetic using OPNQRYF command" />
|
|||
|
|
<meta name="DC.Relation" scheme="URI" content="rbafodttaopq.htm" />
|
|||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
|||
|
|
<meta name="DC.Format" content="XHTML" />
|
|||
|
|
<meta name="DC.Identifier" content="rbafotssubtr" />
|
|||
|
|
<meta name="DC.Language" content="en-us" />
|
|||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|||
|
|
<!-- US Government Users Restricted Rights -->
|
|||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|||
|
|
<title>Subtract timestamps</title>
|
|||
|
|
</head>
|
|||
|
|
<body id="rbafotssubtr"><a name="rbafotssubtr"><!-- --></a>
|
|||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|||
|
|
<h1 class="topictitle1">Subtract timestamps</h1>
|
|||
|
|
<div><p>The result of subtracting one timestamp (TS2) from another (TS1)
|
|||
|
|
is a timestamp duration that specifies the number of years, months, days,
|
|||
|
|
hours, minutes, seconds, and microseconds between the two timestamps. </p>
|
|||
|
|
<div class="p">The data type of the result is DECIMAL(20,6). If TS1 is greater than or
|
|||
|
|
equal to TS2, TS2 is subtracted from TS1. If TS1 is less than TS2, however,
|
|||
|
|
TS1 is subtracted from TS2 and the sign of the result is made negative. The
|
|||
|
|
following procedural description clarifies the steps involved in the operation
|
|||
|
|
RESULT = TS1 - TS2: <p>If %MICSEC(TS2) <= %MICSEC(TS1) ; <br />
|
|||
|
|
then %MICSEC(RESULT) = %MICSEC(TS1) - ; <br />
|
|||
|
|
%MICSEC(TS2).<br />
|
|||
|
|
<br />
|
|||
|
|
If %MICSEC(TS2) > %MICSEC(TS1) ; <br />
|
|||
|
|
then %MICSEC(RESULT) = 1000000 + ; <br />
|
|||
|
|
%MICSEC(TS1) - %MICSEC(TS2) ; <br />
|
|||
|
|
and %SECOND(TS2) is incremented by 1.</p>
|
|||
|
|
The seconds and minutes part
|
|||
|
|
of the timestamps are subtracted as specified in the rules for subtracting
|
|||
|
|
times: <p>If %HOUR(TS2) <= %HOUR(TS1) ; <br />
|
|||
|
|
then %HOUR(RESULT) = %HOUR(TS1) - %HOUR(TS2).<br />
|
|||
|
|
<br />
|
|||
|
|
If %HOUR(TS2) > %HOUR(TS1) ; <br />
|
|||
|
|
then %HOUR(RESULT) = 24 + %HOUR(TS1) - %HOUR(TS2) ; <br />
|
|||
|
|
and %DAY(TS2) is incremented by 1.</p>
|
|||
|
|
</div>
|
|||
|
|
<p>The date part of the timestamp is subtracted as specified in the rules
|
|||
|
|
for subtracting dates.</p>
|
|||
|
|
</div>
|
|||
|
|
<div>
|
|||
|
|
<div class="familylinks">
|
|||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafodttaopq.htm" title="Date, time, and timestamp values can be incremented, decremented, and subtracted. These operations might involve decimal numbers called durations. These topics include a definition of durations and a specification of the rules for performing arithmetic operations on date, time, and timestamp values.">Perform date, time, and timestamp arithmetic using the Open Query File (OPNQRYF) command</a></div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|