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| author | deepakjadmin |
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| date | Wed, 20 Jan 2016 12:15:15 -0500 |
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<html> <head> <title>MayaChemTools:Documentation:DBSchemaTablesToTextFiles.pl</title> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <link rel="stylesheet" type="text/css" href="../../css/MayaChemTools.css"> </head> <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> <br/> <center> <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> </center> <br/> <div class="DocNav"> <table width="100%" border=0 cellpadding=0 cellspacing=2> <tr align="left" valign="top"><td width="33%" align="left"><a href="./CalculatePhysicochemicalProperties.html" title="CalculatePhysicochemicalProperties.html">Previous</a> <a href="./index.html" title="Table of Contents">TOC</a> <a href="./DBSQLToTextFiles.html" title="DBSQLToTextFiles.html">Next</a></td><td width="34%" align="middle"><strong>DBSchemaTablesToTextFiles.pl</strong></td><td width="33%" align="right"><a href="././code/DBSchemaTablesToTextFiles.html" title="View source code">Code</a> | <a href="./../pdf/DBSchemaTablesToTextFiles.pdf" title="PDF US Letter Size">PDF</a> | <a href="./../pdfgreen/DBSchemaTablesToTextFiles.pdf" title="PDF US Letter Size with narrow margins: www.changethemargins.com">PDFGreen</a> | <a href="./../pdfa4/DBSchemaTablesToTextFiles.pdf" title="PDF A4 Size">PDFA4</a> | <a href="./../pdfa4green/DBSchemaTablesToTextFiles.pdf" title="PDF A4 Size with narrow margins: www.changethemargins.com">PDFA4Green</a></td></tr> </table> </div> <p> </p> <h2>NAME</h2> <p>DBSchemaTablesToTextFiles.pl - Export table data from database SchemaName(s) into CSV/TSV text files</p> <p> </p> <h2>SYNOPSIS</h2> <p>DBSchemaTablesToTextFiles.pl SchemaName(s)...</p> <p>DBSchemaTablesToTextFiles.pl [<strong>-d, --dbdriver</strong> mysql | Oracle| Postgres or Pg] [<strong>--dbhost </strong> hostname] [<strong>--dbname</strong> databasename] [<strong>--dbpassword</strong> password] [<strong>--dbusername</strong> username] [<strong>--exportdatalabels</strong> yes | no] [<strong>--exportlobs</strong> yes | no] [<strong>-h, --help</strong>] [<strong>-m, --mode</strong> exportdata | describetable] [<strong>-n, --numoutfilesmode</strong> single | multiple] [<strong>-o, --overwrite</strong>] [<strong>--outdelim</strong> comma | tab | semicolon] [<strong>-q, --quote</strong> yes | no] [<strong>-r, --root</strong> rootname] [<strong>--replacenullstr string</strong>] [<strong>-w --workingdir</strong> dirname] SchemaName(s)...</p> <p> </p> <h2>DESCRIPTION</h2> <p>Export table data from database SchemaName(s) into CSV/TSV text files. Use <strong>-n --numoutfiles</strong> option to control the number of text files generated for a database schema.</p> <p> </p> <h2>OPTIONS</h2> <dl> <dt><strong><strong>-d, --dbdriver</strong> <em>mysql | Oracle | Postgres or Pg</em></strong></dt> <dd> <p>Database driver name. Possible values: <em>mysql, Oracle, Postgres or Pg</em>. Default: <em>MySQL</em> or value of environment variable DBI_DRIVER. This script has only been tested with MySQL, Oracle and PostgreSQL drivers.</p> </dd> <dt><strong><strong>--dbhost </strong> <em>hostname</em></strong></dt> <dd> <p>Database host name. Default: <em>127.0.0.1</em> for both MySQL and Oracle. For remote databases, specify complete remote host domain: <em>dbhostname.org</em> or something like it.</p> </dd> <dt><strong><strong>--dbname</strong> <em>databasename</em></strong></dt> <dd> <p>Database name. Default: mysql for MySQL, postgres for PostgreSQL and none for Oracle. For connecting to local/remote Oracle databases, this value can be left undefined assuming <strong>--dbhost</strong> is correctly specified.</p> </dd> <dt><strong><strong>--dbpassword</strong> <em>password</em></strong></dt> <dd> <p>Database user password. Default: <em>none</em> and value of environment variable DBI_PASS is used for connecting to database.</p> </dd> <dt><strong><strong>--dbusername</strong> <em>username</em></strong></dt> <dd> <p>Database user name. Default: <em>none</em> and value of environment variable DBI_USER is used for connecting to database.</p> </dd> <dt><strong><strong>--exportdatalabels</strong> <em>yes | no</em></strong></dt> <dd> <p>This option is mode specific and controls exporting of column data labels during exportdata mode. Possible values: <em>yes or no</em>. Default: <em>yes</em>.</p> </dd> <dt><strong><strong>--exportlobs</strong> <em>yes | no</em></strong></dt> <dd> <p>This option is mode specific and controls exporting of CLOB/BLOB or BYTEA data columns during exportdata mode. Possible values: <em>yes or no</em>. Default: <em>no</em>.</p> </dd> <dt><strong><strong>-h, --help</strong></strong></dt> <dd> <p>Print this help message.</p> </dd> <dt><strong><strong>-m, --mode</strong> <em>exportdata | describetable</em></strong></dt> <dd> <p>Data selection criterion from database. Possible values: <em>exportdata or describetable</em>. Default value: <em>exportdata</em>.</p> </dd> <dt><strong><strong>-n, --numoutfilesmode</strong> <em>single | multiple</em></strong></dt> <dd> <p>Number of CSV/TSV output files to generate: combine output into one file or generate a different file for each table in a schema. Possible values: <em>single or multiple</em>. Default: <em>single</em>.</p> <p>In a single output file, data for different tables is separated by a blank line.</p> <p>Single outfile option in <em>exportdata</em> mode is quite useful for exporting data from all tables in specifed schemas to one file which can be used for migrating data to another database or simply provide a backup of data; during <em>describetable</em> mode, it provides a means to collect information about columns of all schema tables which can help in creation of these tables on a different database server.</p> </dd> <dt><strong><strong>-o, --overwrite</strong></strong></dt> <dd> <p>Overwrite existing files.</p> </dd> <dt><strong><strong>--outdelim</strong> <em>comma | tab | semicolon</em></strong></dt> <dd> <p>Output text file delimiter. Possible values: <em>comma, tab, or semicolon</em>. Default value: <em>comma</em></p> </dd> <dt><strong><strong>-q, --quote</strong> <em>yes | no</em></strong></dt> <dd> <p>Put quotes around column values in output text file. Possible values: <em>yes or no</em>. Default value: <em>yes</em>.</p> </dd> <dt><strong><strong>-r, --root</strong> <em>rootname</em></strong></dt> <dd> <p>New file name is generated using the root:<Root>.<Ext> and <Root><TableName>.<Ext> for <em>single</em> and <em>multiple</em> <strong>-n --numoutfiles</strong> option values. Default file name for <em>single</em> <strong>-n --numoutfiles</strong> option value: <Mode>SchemaTables.<Ext>. Default file names for <em>multiple</em> <strong>-n --numoutfiles</strong> value: <Mode><SchemaName><TableName>.<Ext>. Based on <strong>-m --mode</strong> option, <em>Export</em> or <em>Describe</em> <Mode> value is used. The csv and tsv <Ext> values are used for comma/semicolon, and tab delimited text files respectively. This option is ignored for multiple input schema names.</p> </dd> <dt><strong><strong>--replacenullstr</strong> <em>string</em></strong></dt> <dd> <p>Replace NULL or undefined row values with specified value. Default: <em>none</em>.</p> <p>For importing output text files into MySQL database using "load data local infile '<tablename>.tsv' into table <tablename>" command, use <em>--raplacenullstr "NULL"</em> in conjunction with <em>--exportdatalabels no</em>, <em>--quote no</em>, and <em>--outdelim tab</em> options: it'll generate files for direct import into MySQL assuming tables already exists.</p> </dd> <dt><strong><strong>-w --workingdir</strong> <em>dirname</em></strong></dt> <dd> <p>Location of working directory. Default: current directory.</p> </dd> </dl> <p> </p> <h2>EXAMPLES</h2> <p>To export data in all tables from mysql schema on a MySQL server running on a local machine using username/password from DBI_USER and DBI_PASS environmental variables, type:</p> <div class="ExampleBox"> % DBSchemaTablesToTextFiles.pl mysql</div> <p>To describe all tables in mysql and test schemas on a MySQL server running on a remote machine using explicit username/password and capturing the ouput into a DescribeTables.csv file, type:</p> <div class="ExampleBox"> % DBSchemaTablesToTextFiles.pl --dbdriver mysql --dbuser <name> --dbpassword <pasword> --dbname mysql --dbhost <mysqlhostname.org> -r DescribeTable -m describetable -o mysql test</div> <p>To describe all tables in SCOTT schema in Oracle running on a remote machine using explicit username/password and capturing the ouput into a DescribeAllTable.tsv file, type:</p> <div class="ExampleBox"> % DBSchemaTablesToTextFiles.pl --dbdriver Oracle --dbuser <name> --dbpassword <pasword> --dbhost <oraclehostname.com> -r DescribeAllTable -m describetable --outdelim tab --quote no -o SCOTT</div> <p>To export data in all tables in mysql and test schemas on a MySQL server running at a local machine using explicit username/password and capturing the data in TSV file for each table with empty values substitued with NULL and clob/blob data, type:</p> <div class="ExampleBox"> % DBSchemaTablesToTextFiles.pl --dbdriver Oracle --dbuser <name> --dbpassword <pasword> -r ExportTables --outdelim tab --quote no --replacenullstr "NULL" -m exportdata --exportlobs no --numoutfiles multiple -o user user_info</div> <p> </p> <h2>AUTHOR</h2> <p><a href="mailto:msud@san.rr.com">Manish Sud</a></p> <p> </p> <h2>SEE ALSO</h2> <p><a href="./DBSQLToTextFiles.html">DBSQLToTextFiles.pl</a>, <a href="./DBTablesToTextFiles.html">DBTablesToTextFiles.pl</a> </p> <p> </p> <h2>COPYRIGHT</h2> <p>Copyright (C) 2015 Manish Sud. All rights reserved.</p> <p>This file is part of MayaChemTools.</p> <p>MayaChemTools is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.</p> <p> </p><p> </p><div class="DocNav"> <table width="100%" border=0 cellpadding=0 cellspacing=2> <tr align="left" valign="top"><td width="33%" align="left"><a href="./CalculatePhysicochemicalProperties.html" title="CalculatePhysicochemicalProperties.html">Previous</a> <a href="./index.html" title="Table of Contents">TOC</a> <a href="./DBSQLToTextFiles.html" title="DBSQLToTextFiles.html">Next</a></td><td width="34%" align="middle"><strong>March 29, 2015</strong></td><td width="33%" align="right"><strong>DBSchemaTablesToTextFiles.pl</strong></td></tr> </table> </div> <br /> <center> <img src="../../images/h2o2.png"> </center> </body> </html>