MySQL TIMESTAMPDIFF() function
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Description
MySQL the TIMESTAMPDIFF() returns a value after subtracting a datetime expression from another.
It is not necessary that both the expression are of same type. One may be a date and another is datetime. A date value is treated as a datetime with a default time part '00:00:00'. The unit for the result is given by another argument.
The unit should be one of the following : FRAC_SECOND (microseconds), SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, or YEAR.
Syntax
TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2);
Arguments
| Name | Description |
|---|---|
| datetime_expr1 | A datetime expression. |
| datetime_expr1 | A datetime expression. |
| unit | An unit, as described in the description. |
Example :
Code
SELECT TIMESTAMPDIFF(MONTH,'2009-05-18','2009-07-29');
Explanation
The above statement will return a value in months by subtracting 2009-05-18 from 2009-07-29.
Output
.gif)
PHP script
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>example-timestampdiff-function - php mysql examples | w3resource</title>
</head>
<body>
<?php
echo "<h2>Difference of dates in terms of month between 2009-05-18 and 2009-07-29 : </h2>";
echo "<table border='1' style='border-collapse: collapse;border-color: silver;'>";
echo "<tr style='font-weight: bold;'>";
echo "<td width='100' align='center'>Difference in months</td>";
echo "</tr>";
include("../dbopen.php");
$result = mysql_query("SELECT TIMESTAMPDIFF(MONTH,'2009-05-18','2009-07-29')");
while($row=mysql_fetch_array($result))
{
echo "<tr>";
echo "<td align='center' width='200'>" . $row["TIMESTAMPDIFF(MONTH,'2009-05-18','2009-07-29')"] . "</td>";
echo "</tr>";
}
echo "</table>";
?>
</body>
</html>
Example : TIMESTAMPDIFF() function in MINUTE
Code
SELECT TIMESTAMPDIFF(MINUTE,'2009-05-18 11:45:42','2009-05-20 15:16:39');Explanation
The above statement will return a value in minutes after subtracting 2009-05-18 11:45:42 from 2009-05-20 15:16:39.
Output
-example.gif)
PHP script
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>example1-timestampdiff-function - php mysql examples | w3resource</title>
</head>
<body>
<?php
echo "<h2>Difference in minutes between 2009-05-18 11:45:42 and 2009-05-20 15:16:39 : </h2>";
echo "<table border='1' style='border-collapse: collapse;border-color: silver;'>";
echo "<tr style='font-weight: bold;'>";
echo "<td width='100' align='center'>Difference in months</td>";
echo "</tr>";
include("../dbopen.php");
$result = mysql_query("SELECT TIMESTAMPDIFF(MINUTE,'2009-05-18 11:45:42','2009-05-20 15:16:39')");
while($row=mysql_fetch_array($result))
{
echo "<tr>";
echo "<td align='center' width='200'>" . $row["TIMESTAMPDIFF(MINUTE,'2009-05-18 11:45:42','2009-05-20 15:16:39')"] . "</td>";
echo "</tr>";
}
echo "</table>";
?>
</body>
</html>
