mysql execution time
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06-07-2019 - |
Question
Is there a way to get the execution time of the last executed query in mysql?
Solution
mysql has a builtin profiler. You can enable profiling by issuing set profiling=1;
and use show profiles;
to get execution times.
OTHER TIPS
if using PHP .. you can use microtime() before the query and after the query to figure out how long it took for the query to execute.
$sql_query='SELECT * FROM table';
$msc=microtime(true);
$mysql_query($sql_query);
$msc=microtime(true)-$msc;
echo $msc.' seconds'; // in seconds
echo ($msc*1000).' milliseconds'; // in millseconds
Try this...
mysql_query("SET profiling = 1;");
if (mysql_errno()) { die( "ERROR ".mysql_errno($link) . ": " . mysql_error($link) ); }
/* It goes without saying that this is your actual query that you want to measure the execution time of */
$query="SELECT some_field_name FROM some_table_name";
$result = mysql_query($query);
if (mysql_errno()) { die( "ERROR ".mysql_errno($link) . ": " . mysql_error($link) ); }
$exec_time_result=mysql_query("SELECT query_id, SUM(duration) FROM information_schema.profiling GROUP BY query_id ORDER BY query_id DESC LIMIT 1;");
if (mysql_errno()) { die( "ERROR ".mysql_errno($link) . ": " . mysql_error($link) ); }
$exec_time_row = mysql_fetch_array($exec_time_result);
echo "<p>Query executed in ".$exec_time_row[1].' seconds';
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