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Special Forums UNIX Desktop Questions & Answers Extracting data from tables and storing in a file Post 302426195 by ladyAnne on Tuesday 1st of June 2010 05:40:31 AM
Old 06-01-2010
Extracting data from tables and storing in a file

Hi

I am trying to write a script to extract information from a database and save that info to a csv file.

I am using sql, an oracle database

I have no idea how to even begin this.

Can somebody please help.
 

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MYSQLDBIMPORT(1)						  MySQL Utilities						  MYSQLDBIMPORT(1)

NAME
mysqldbimport - Import object definitions or data into a database SYNOPSIS
mysqldbimport [options] import_file ... DESCRIPTION
This utility imports metadata (object definitions) or data or both for one or more databases from one or more files. If an object exists on the destination server with the same name as an imported object, it is dropped first before importing the new object. To skip objects by type, use the --skip option with a list of the objects to skip. This enables you to extract a particular set of objects, say, for importing only events (by excluding all other types). Similarly, to skip creation of UPDATE statements for BLOB data, specify the --skip-blobs option. To specify the input format, use one of the following values with the --format option. These correspond to the output formats of the mysqldbexport utility: sql (default) Input consists of SQL statements. For definitions, this consists of the appropriate CREATE and GRANT statements. For data, this is an INSERT statement (or bulk insert if the --bulk-insert option is specified). grid Display output in grid or table format like that of the mysql monitor. csv Input is formatted in comma-separated values format. tab Input is formatted in tab-separated format. vertical Display output in single-column format like that of the G command for the mysql monitor. To indicate that input in csv or tab format does not contain column headers, specify the --no-headers option. To turn off all feedback information, specify the --quiet option. By default, the utility creates each table on the destination server using the same storage engine as the original table. To override this and specify the storage engine to use for all tables created on the destination server, use the --new-storage-engine option. If the desti- nation server supports the new engine, all tables use that engine. To specify the storage engine to use for tables for which the destination server does not support the original storage engine on the source server, use the --default-storage-engine option. The --new-storage-engine option takes precedence over --default-storage-engine if both are given. If the --new-storage-engine or --default-storage-engine option is given and the destination server does not support the specified storage engine, a warning is issued and the server's default storage engine setting is used instead. You must provide connection parameters (user, host, password, and so forth) for an account that has the appropriate privileges to access all objects in the operation. For details, see NOTES. OPTIONS
mysqldbimport accepts the following command-line options: --help Display a help message and exit. --bulk-insert, -b Use bulk insert statements for data. --default-storage-engine=<def_engine> The engine to use for tables if the destination server does not support the original storage engine on the source server. --drop-first, -d Drop each database to be imported if exists before importing anything into it. --dryrun Import the files and generate the statements but do not execute them. This is useful for testing input file validity. --format=<format>, -f<format> Specify the input format. Permitted format values are sql, grid, tab, csv, and vertical. The default is sql. --import=<import_type>, -i<import_type> Specify the import format. Permitted format values are definitions = import only the definitions (metadata) for the objects in the database list, data = import only the table data for the tables in the database list, and both = import the definitions and the data. The default is definitions. If you attempt to import objects into an existing database, the result depends on the import format. If the format is definitions or both, an error occurs unless --drop-first is given. If the format is data, imported table data is added to existing table data. --new-storage-engine=<new_engine> The engine to use for all tables created on the destination server. --no-headers, -h Input does not contain column headers. This option applies only for csv and tab output. --quiet, -q Turn off all messages for quiet execution. --server=<server> Connection information for the server in <user>[:<passwd>]@<host>[:<port>][:<socket>] format. --skip=<skip_objects> Specify objects to skip in the operation as a comma-separated list (no spaces). Permitted values are CREATE_DB, DATA, EVENTS, FUNC- TIONS, GRANTS, PROCEDURES, TABLES, TRIGGERS, and VIEWS. --skip-blobs Do not import BLOB data. --skip-rpl Do not execute replication commands. --verbose, -v Specify how much information to display. Use this option multiple times to increase the amount of information. For example, -v = verbose, -vv = more verbose, -vvv = debug. --version Display version information and exit. NOTES
The login user must have the appropriate permissions to create new objects, access (read) the mysql database, and grant privileges. If a database to be imported already exists, the user must have read permission for it, which is needed to check the existence of objects in the database. Actual privileges needed may differ from installation to installation depending on the security privileges present and whether the database contains certain objects such as views or events and whether binary logging is enabled. Some combinations of the options may result in errors during the operation. For example, excluding tables but not views may result in an error when a view is imported. The --new-storage-engine and --default-storage-engine options apply to all destination tables in the operation. For the --format and --import options, the permitted values are not case sensitive. In addition, values may be specified as any unambiguous prefix of a valid value. For example, --format=g specifies the grid format. An error occurs if a prefix matches more than one valid value. EXAMPLES
To import the metadata from the util_test database to the server on the local host using a file in CSV format, use this command: $ mysqldbimport --server=root@localhost --import=definitions --format=csv data.csv # Source on localhost: ... connected. # Importing definitions from data.csv. #...done. Similarly, to import the data from the util_test database to the server on the local host, importing the data using bulk insert statements, use this command: $ mysqldbimport --server=root@localhost --import=data --bulk-insert --format=csv data.csv # Source on localhost: ... connected. # Importing data from data.csv. #...done. To import both data and definitions from the util_test database, importing the data using bulk insert statements from a file that contains SQL statements, use this command: $ mysqldbimport --server=root@localhost --import=both --bulk-insert --format=sql data.sql # Source on localhost: ... connected. # Importing definitions and data from data.sql. #...done. COPYRIGHT
Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- CHANTABILITY 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA AUTHOR
MySQL Utilities Team COPYRIGHT
2010, Oracle and/or its affiliates. All rights reserved. 1.0.3 May 09, 2012 MYSQLDBIMPORT(1)
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