MYSQL_EXPLAIN_LOG(1)         MySQL Database System        MYSQL_EXPLAIN_LOG(1)
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NAME
6       mysql_explain_log - use EXPLAIN on statements in query log
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SYNOPSIS
9       mysql_explain_log [options] < log_file
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DESCRIPTION
12       mysql_explain_log reads its standard input for query log contents. It
13       uses EXPLAIN to analyze SELECT statements found in the input.  UPDATE
14       statements are rewritten to SELECT statements and also analyzed with
15       EXPLAIN.  mysql_explain_log then displays a summary of its results.
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17       The results may assist you in determining which queries result in table
18       scans and where it would be beneficial to add indexes to your tables.
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20       Invoke mysql_explain_log like this, where log_file contains all or part
21       of a MySQL query log:
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23          shell> mysql_explain_log [options] < log_file
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25       mysql_explain_log understands the following options:
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27       ·  --help, -?
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29          Display a help message and exit.
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31       ·  --date=YYMMDD, -d YYMMDD
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33          Select entries from the log only for the given date.
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35       ·  --host=host_name, -h host_name
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37          Connect to the MySQL server on the given host.
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39       ·  --password=password, -p password
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41          The password to use when connecting to the server.
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43          Specifying a password on the command line should be considered
44          insecure. See Section 6.6, “Keeping Your Password Secure”.
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46       ·  --printerror=1, -e 1
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48          Enable error output.
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50       ·  --socket=path, -S path
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52          For connections to localhost, the Unix socket file to use, or, on
53          Windows, the name of the named pipe to use.
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55       ·  --user=user_name, -u user_name
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57          The MySQL username to use when connecting to the server.
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60       Copyright 1997-2007 MySQL AB
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62       This documentation is NOT distributed under a GPL license. Use of this
63       documentation is subject to the following terms: You may create a
64       printed copy of this documentation solely for your own personal use.
65       Conversion to other formats is allowed as long as the actual content is
66       not altered or edited in any way. You shall not publish or distribute
67       this documentation in any form or on any media, except if you
68       distribute the documentation in a manner similar to how MySQL
69       disseminates it (that is, electronically for download on a Web site
70       with the software) or on a CD-ROM or similar medium, provided however
71       that the documentation is disseminated together with the software on
72       the same medium. Any other use, such as any dissemination of printed
73       copies or use of this documentation, in whole or in part, in another
74       publication, requires the prior written consent from an authorized
75       representative of MySQL AB. MySQL AB reserves any and all rights to
76       this documentation not expressly granted above.
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78       Please email <docs@mysql.com> for more information.
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SEE ALSO
81       For more information, please refer to the MySQL Reference Manual, which
82       may already be installed locally and which is also available online at
83       http://dev.mysql.com/doc/.
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AUTHOR
86       MySQL AB (http://www.mysql.com/).  This software comes with no
87       warranty.
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MySQL 5.0                         07/04/2007              MYSQL_EXPLAIN_LOG(1)


        

    


            
        

        

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