|
|
Removing Duplicate Rows in a file
|
|
|
|
MYSQLDUMPSLOW(1) MySQL Database System MYSQLDUMPSLOW(1) NAME
mysqldumpslow - Summarize slow query log files SYNOPSIS
mysqldumpslow [options] [log_file ...] DESCRIPTION
The MySQL slow query log contains information about queries that take a long time to execute (see Section 5.2.5, "The Slow Query Log"). mysqldumpslow parses MySQL slow query log files and prints a summary of their contents. Normally, mysqldumpslow groups queries that are similar except for the particular values of number and string data values. It "abstracts" these values to N and 'S' when displaying summary output. The -a and -n options can be used to modify value abstracting behavior. Invoke mysqldumpslow like this: shell> mysqldumpslow [options] [log_file ...] mysqldumpslow supports the following options. o --help Display a help message and exit. o -a Do not abstract all numbers to N and strings to 'S'. o --debug, -d Run in debug mode. o -g pattern Consider only queries that match the (grep-style) pattern. o -h host_name Host name of MySQL server for *-slow.log file name. The value can contain a wildcare. The default is * (match all). o -i name Name of server instance (if using mysql.server startup script). o -l Do not subtract lock time from total time. o -n N Abstract numbers with at least N digits within names. o -r Reverse the sort order. o -s sort_type How to sort the output. The value of sort_type should be chosen from the following list: o t, at: Sort by query time or average query time o l, al: Sort by lock time or average lock time o s, as: Sort by rows sent or average rows sent o c: Sort by count o -t N Display only the first N queries in the output. o --verbose, -v Verbose mode. Print more information about what the program does. Example of usage: shell> mysqldumpslow Reading mysql slow query log from /usr/local/mysql/data/mysqld51-apple-slow.log Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t2 select * from t1 Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t2 select * from t1 limit N Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t1 select * from t1 COPYRIGHT
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Sun Microsystems, Inc. (http://www.mysql.com/). MySQL 5.1 04/06/2010 MYSQLDUMPSLOW(1)
