[英]mysql command line return execution time?
I'm working on a Linux host with mysql command. 我正在使用mysql命令在Linux主机上工作。 I have a script that runs batch mysql commands (like
mysql -e "select..."
) and I wish to summarize execution time of each of the commands. 我有一个运行批处理mysql命令的脚本(如
mysql -e "select..."
),我希望总结每个命令的执行时间。
Is there a way to get mysql exec time from the command line? 有没有办法从命令行获取mysql exec时间?
For example, in mysql interactive mode, execution result comes with a time, like this: 例如,在mysql交互模式下,执行结果带有时间,如下所示:
mysql> select count(*) from trialtable;
+----------+
| count(*) |
+----------+
| 4000 |
+----------+
1 row in set (0.00 sec)
Can I get the same profile in command line? 我可以在命令行中获得相同的配置文件吗?
Thank you 谢谢
You can use 您可以使用
set profiling=1
and then, later, 然后,
show profiles
which will give a list of commands and times. 这将给出一个命令和时间列表。
See http://dev.mysql.com/doc/refman/5.0/en/show-profiles.html 请参阅http://dev.mysql.com/doc/refman/5.0/en/show-profiles.html
h/t http://ronaldbradford.com/blog/timing-your-sql-queries-2010-07-07/ h / t http://ronaldbradford.com/blog/timing-your-sql-queries-2010-07-07/
You can invoke mysql with -vv
, it will pretty-print similar to when you're in interactive mode: 您可以使用
-vv
调用mysql,它将与您处于交互模式时类似:
$ mysql -vv -u myUser -pMyPass DBname -e 'select count(*) from mytable;'
--------------
select count(*) from mytable
--------------
+----------+
| count(*) |
+----------+
| 1068316 |
+----------+
1 row in set (0.00 sec)
Bye
If you're piping your queries, then it's -vvv
: 如果您正在查询,那么它是
-vvv
:
$ echo 'select count(*) from mytable;' | mysql -vvv -u myUser -pMyPass DBname
--------------
select count(*) from mytable
--------------
+----------+
| count(*) |
+----------+
| 1068316 |
+----------+
1 row in set (1.34 sec)
Bye
Time's yours to grep. 时间是你的grep。 :D
:d
Here is the exact syntax for PHP. 这是PHP的确切语法。
mysql_query("SET profiling = 1;");
if (mysql_errno()) { die( "ERROR ".mysql_errno($link) . ": " . mysql_error($link) ); }
$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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