mysql drop all tables

From time to time I stumbled over the case, that I had to drop all tables from a MySQL database. In MySQL the table is actually dropped and recreated, hence the speed of the query. The best way to drop all tables in a database is by executing DROP DATABASE, which will drop the database itself, and all tables in it. This term shall apply only within jurisdictions where a particular term is illegal. What if you were to drop about 150 stubborn tables with foreign key references among each other? Googling on topic always brings me to this SO question so here is working mysql code that deletes BOTH tables and views: Here is an automated way to do this via a bash script: If in linux (or any other system that support piping, echo and grep) you can do it with one line: I know this is an old question, but I think this method is fast and simple. Usually I open Terminal.app and connect to a remote MySQL database. Open a new query tab, and paste what you have copied from the previous query. Edit > Select All), and then by copying all of the selected results (hint: right-clicked drop-down menu works!). blog.arclerit.com) unless expressly excluded by their own terms and conditions. I found this solution on another question that works really well for me: That will actually empty all your tables in the database DB_NAME, and not only display the TRUNCATE command line. means the website that you are currently using (www.ArclerIT.com) and any sub-domains of this site (e.g. With MySQL — and any other database — any time you want to rebuild your database schema, the first thing you normally do is drop all your old database tables with MySQL drop table statements, and then rebuild them with MySQL create table statements. SET @tables = CONCAT('DROP TABLE IF EXISTS ', @tables); This line adds “DROP TABLE IF EXISTS” before your tables variable. The DROP TABLE statement removes a table and its data permanently from the database. The DROP DATABASE statement drops all tables in the database and deletes the database permanently. TRUNCATE TABLE tablename; This will delete all data in the table very quickly. Syntax for foreign key is MySQL drop all tables: Table has to be deleted very carefully because the data will be lost and it cannot be retrieved once a table is deleted. Dropping Tables of a MySQL / MariaDB Schema All At Once. Then I use this command to drop a table: mysql> drop table [table name]; But what I need is … Assuming you already have MySQL set up in your path variables, we can use the command to drop tables within your database. Looking for a short way to drop all tables of a MySQL or MariaDB database? Check out this Author's contributed articles. Python MySQL - Drop Table; kumar_satyam. DROP TABLE causes an implicit commit, except when used with the TEMPORARY keyword. In phpMyAdmin or other GUI-based tools – in general – you only have the possibility to drop the whole database. NB: to use output of SELECT easier, mysql -B option can help. MySQL Functions. For example: Note 2: If you have VIEWs, you’ll have to correct each DROP TABLE `VIEW_NAME` statement to DROP VIEW `VIEW_NAME` manually. Every time i used to drop the database and recreate it. Primary key in one table will be referred as a foreign key in another table. “RESTRICT and CASCADE are permitted to make porting easier. MySQL DROP DATABASE Summary: in this tutorial, you will learn how to use the MySQL DROP DATABASE statement to delete an existing database in the server. raindog308 Administrator, Moderator. SQL DROP TABLE Example. Or you have to click-drop each table … Please read our 'Community Rules' by clicking on it in the right menu! A one liner to drop all tables from a given database: Running this will drop all tables from database DATABASE_NAME. Unless you have lots of other entities, why not just DROP DATABASE and start from scratch? means any text, graphics, images, audio, video, software, data compilations and any other form of information capable of being stored in a computer that appears on or forms part of this Web Site; means Arcler Ltd at 71-75 Shelton Street, Covent Garden, London WC2H 9JQ United Kingdom; means collectively any online and/or offline facilities, tools, services or information that Arcler makes available through the Web Site, by use of the software acquired and/or purchased from the Web Site, or via its tehnical consultants working in person either now or in the future; means any online or offline information and communication system that Arcler makes available through the Web Site, and/or any software distributed by Arcler by any means - online or offline - either now or in the future. Limit the generated drops to your database like this. You can set current database using use. MySQL MySQLi Database We can use either TRUNCATE statement or DROP statement to delete all the rows from the table. The TEMPORARY option allows you to remove temporary tables only. You will need to cut and paste the output into your SQL engine to execute them. I’m doing some research in owncloud installation and every time i want to clear the database tables so that, i can go forward. In MySQL 5.5, they do nothing.”. To view the Privacy Policy, please click on the link above. See your article appearing on the GeeksforGeeks main page and help other Geeks. Viewed 16k times 12. Arcler can not be held liable for any specific results from the use of its Web Site, Products and/or Services. Click the database at the left hand side to display all tables at the right hand side frame. This agreement applies as between you, the User of this Web Site and Arcler, the owner(s) of this Web Site. Looking for a short way to drop all tables of a MySQL or MariaDB database? Open a new line at the top of the drop statements and insert the following one line code so as to make it the first command of all statements: Go to the end of the last statement, and type or copy the following: You can now execute the query, and the job gets done. Subject to sub-clause 2.3 you may not reproduce, copy, distribute, store or in any other fashion re-use material from the Web Site unless otherwise indicated on the Web Site or unless given express written permission to do so by Arcler, Ltd. Material from the Web Site may be re-used without written permission where any of the exceptions detailed in Chapter III of the Copyright Designs and Patents Act 1988 apply. Worked for Server version: 5.6.38 MySQL Community Server (GPL). Method 1: MySQL Drop All Tables with SQL Step 1: Generate a List of Drop Table Statements For All Tables. We cannot accept software for return unless the publisher / manufacturer agrees to take it back from us. Replace YOUR_DATABASE with the name of your database or remove the entire IF statement (I like the added safety). It can also be done with the help of DELETE statement but in that case WHERE clause must identify all the rows of the table. Creation of database For details, you can visit our services page, or contact us directly. Note of course you’ll have to put your credentials in (twice) in these mysql commands, too, unless you have a very low security setup. Yet you can apply it once and re-use it later with only a single-click call with a tool like Navicat minimizing it to a single step for the future: Open a new query tab and type – or just copy and paste the following as shown in the screenshot a little below: Remember to substitute ‘your_database’ with the name of your own schema to run this on. Nothing in these terms and conditions excludes or restricts Arcler’s liability for death or personal injury resulting from any negligence or fraud on the part of Arcler. Now select tables to delete by clicking their regarding checkbox. DROP TABLE table_name; Note: Be careful before dropping a table. If you have a LOT of tables, you may hit some limits on GROUP_CONCAT(). But then you have to recreate it from the scratch. Arcler accepts no liability for any disruption or non-availability of the Web Site resulting from external causes including, but not limited to, ISP equipment failure, host equipment failure, communications network failure, power failure, natural events, acts of war or legal restrictions and censorship. Finally you can save the queries in Navicat and use them again later as needed. Here is SurlyDre’s stored procedure modified so that foreign keys are ignored: DROP PROCEDURE IF EXISTS `drop_all_tables`; DELIMITER $$ CREATE PROCEDURE `drop_all_tables`() BEGIN DECLARE _done INT DEFAULT FALSE; DECLARE _tableName VARCHAR(255); DECLARE _cursor CURSOR FOR SELECT table_name FROM information_schema.TABLES WHERE table_schema = SCHEMA(); DECLARE … New on LowEndTalk? For deleting a table DROP TABLE command is … Access to your Mysql tables thru PHPMYADMIN. fyi if you happen to have phpMyAdmin installed it’s easy to select all tables and drop them. In the event of any conflict between these Terms and Conditions and any prior versions thereof, the provisions of these Terms and Conditions shall prevail unless it is expressly stated otherwise. This solution is based on @SkyLeach answer but with the support of dropping tables with foreign keys. This drops tables from the database currently in use. To the maximum extent permitted by law, Arcler accepts no liability for any direct or indirect loss or damage, foreseeable or otherwise, including any indirect, consequential, special or exemplary damages arising from the use of the Web Site or any information contained therein. pops a confirmation window. If you wish to return a product you have purchased from Arcler, please email [email protected] (or use the contact form on our web site) explaining your reasons. If you select all tables and choose, http://dev.mysql.com/doc/refman/5.5/en/drop-table.html, http://www.devdaily.com/blog/post/mysql/drop-mysql-tables-in-any-order-foreign-keys. In this Agreement the following terms shall have the following meanings: This Web Site may contain links to other sites. Therefore, you should be very careful when using this statement. Home › Tutorials › Quick Trick: Drop All Tables in MySQL Database in One Step. On 1/2/06, JJ wrote: > Is there an easy way to drop all (MyISAM) tables of a MySQL 3.23 database > besides deleting it and then recreating an empty database? In MySQL, you can also remove multiple tables using a single DROP TABLE statement, each table is separated by a comma (,). Is there a nice easy way to drop all tables from a MySQL database, ignoring any foreign key constraints that may be in there? Building on the answer by @Dion Truter and @Wade Williams, the following shell script will drop all tables, after first showing what it is about to run, and giving you a chance to abort using Ctrl-C. mysql> drop table TABLE_NAME; If you have foreign key checks applied then you will have to first disable the foreign key checks else you will get foreign key constrainterror. This includes, but is not limited to, web-based email, message boards, live chat facilities, email links, electronic forms and application software; means any third party that accesses the Web Site and is not employed by Arcler and acting in the course of their employment; and. It does not answer how to automatically generate drop-table statements for all existing tables and execute them in a single script. Subscribe to our mailing list, and stay up-to-date with the latest news from us. Important facts of the temporary tables: MySQL Temporary table has a decoupled relationship with the database schema, which means that when we drop the MySQL database, it does not necessarily drop the temporary tables within the database The InnoDB database engine does not support the compressed, temporary table. However, if you want to drop all tables in the database, but you also want to keep the database itself and any other non-table objects in it, then you would need to execute DROP TABLE to drop each individual table. This is a pretty old post, but none of the answers here really answered the question in my opinion, so I hope my post will help people! Does heating to un-crystalize redissolve it or melt it? If so, increase the max len variable (and max_allowed_packet, if necessary). The tutorial explores DROP statement commands and shows options to drop tables from MySQL databases. Or otherwise, Dion’s accepted answer is simpler, except you need to execute it twice, first to get the query, and second to execute the query. This is by far the easiest way to empty a MySQL database. Read up on mysqldump. ), Just put here some useful comment made by Jonathan Watt to drop all tables, It helps me and I hope it could be useful. Click the box With selected: and choose Drop. Use of the Web Site is also governed by our https://www.ArclerIT.com/privacy-policy which is incorporated into these terms and conditions by this reference. In the event that any party to these Terms and Conditions fails to exercise any right or remedy contained herein, this shall not be construed as a waiver of that right or remedy. Users should be aware that they use the Web Site and its Content at their own risk. USE DATABASE select 'DROP TABLE ' + '[' + name + '],' as command from SYS. © Copyright 2018-2019 by Arcler Ltd. All rights reserved. How to define a remote server connection in Navicat to your WordPress blog’s MySQL database on your web host, Get a dump of your remote database in minutes with Navicat, MySQL Management and Administration with Navicat, CodeIgniter Wizard – a new PHP CRUD Code Generator from Ozar, New Data Modeling Capabilities of Navicat 15 in Action, How to rapidly create a full-fledged Java EE 7 web application in less than 15 minutes, Back up your WordPress Files and Database with a few clicks and steps in Navicat – Arcler, Arcler – PremiumSoft Partnership for Navicat. Click Check All to select all tables. This is a quick tutorial showing how to delete all tables of a MySQL / MariaDB database instantly bypassing the foreign key constraints in a couple of easy steps in Navicat. I need to drop all the tables in a database without knowing their names beforehand. If you do not agree to be bound by these terms and conditions, you should stop using the Web Site immediately. The first step still is to disable foreign key checking in the console. nmr spectroscopy – What benefits do higher-rated NMR tubes provide? And a nice thing about this is that the database name is only written explicitly once. (or you could alias your mysql command to include your creds. Those wishing to place a link to this Web Site on other sites may do so without prior permission. Syntax. Here is SurlyDre’s stored procedure modified so that foreign keys are ignored: every approach above includes a lot more work than this one AFAICT…. The software must be in perfect, resalable condition with the shrink-wrap intact. Here’s a 3-step process which will solve this issue. This statement deletes the entire structure as well as the content of the table. Under “Script DROP and CREATE” select Script DROP. You can stay up-to-date about news and campaigns from Arcler by signing up for our bi-weekly newsletter. The DROP TABLE statement allows a table to be removed from a MySQL database. Its very hard to do that. Therefore, in order for the drop statements to work if you need: This will disable referential integrity checks – so when you are done performing the drops you need, you will want to reset key checking with. By continuing to use the Web Site you acknowledge that such material is protected by applicable United Kingdom and International intellectual property and other relevant laws. Several times in our project we needed to drop all tables. (the “drop. We give no warranty that the Service will be free of defects and / or faults. Dropping a table also drops any triggers for the table. It ensures that you do not accidentally remove non-temporary tables. If the table is partitioned, the statement removes the table definition, all its partitions, all data stored in those partitions, and all partition definitions associated with the dropped table. I just realized that in the meanwhile you got an answer by Dion Truter that is more complete than mine and suggest to accept that instead. The clever bit is of course copied from other answers here – I just wanted a copy-and-pasteable one-liner (ish) to actually do the job the OP wanted. These terms and conditions and the relationship between you and Arcler, Ltd shall be governed by and construed in accordance with the Law of England and Wales and Arcler, Ltd and you agree to submit to the exclusive jurisdiction of the Courts of England and Wales. You can learn more about this or just click 'OK' to get rid of this annoying box and carry on. For removing all tables from database use the below command. You can construct these DROP TABLE commands by querying the TABLES table in the information_schemadatabase. Then i thought to drop all the tables except database. everyday chemistry – Is honey really a supersaturated solution? That is true but only for phpMyAdmin in version 4.x. This will generate the commands, then immediately pipe them to a 2nd client instance which will delete the tables. Step 2: Copy and Paste The Results Into a New Window. Ask Question Asked 11 years ago. A UNIX / Linux shell script utilty to delete / drop all tables from MySQL database. (adsbygoogle = window.adsbygoogle || []).push({}); MySQL DROP all tables, ignoring foreign keys. So the end result will be DROP TABLE … I found the generated set of drop statements useful, and recommend these tweaks: Note 1: This does not execute the DROP statements, it just gives you a list of them. Here you can find the respective SQL command to list all tables in MySQL, PostgreSQL, Oracle, SQL Server, DB2, and SQLite. Your agreement to comply with and be bound by these terms and conditions is deemed to occur upon your first use of the Web Site. A complete list of applicable disclaimers are published at Arcler's. We assume no responsibility for the content of such web sites and disclaim liability for any and all forms of loss or damage arising out of the use of them. The Service is provided “as is” and on an “as available” basis. If there is a large number of tables then it is very tedious to drop all of them. OBJECTS WHERE TYPE_DESC = 'USER_TABLE' Will give you line by line - result like this DROP TABLE [USER TABLE NAME], DROP TABLE [USER TABLE NAME], DROP TABLE [USER TABLE NAME], I copied that result into a new query window and executed it and dropped all the user tables. You could opt out any time and we keep your e-mail address a secret. Unless expressly stated, these sites are not under the control of Arcler or that of our affiliates. When you do this, you'll often run into problems dropping the old database tables because of the foreign key relationships between the tables. Here’s a cursor based solution. I provided some silly back-ticks to escape special characters in db and table names. Active 8 years, 10 months ago. Drop all the tables from database with a single line from command line: Where [user_name], [password], [host_name] and [database_name] have to be replaced with a real data (user, password, host name, database name). Such notice will be deemed received 10 business days after posting if sent by first class post, the day of sending if the email is received in full on a business day and on the next business day if the email is sent on a weekend or public holiday. This script will drop all tables from a MySQL database OPTIONS: -u Database username -d Database/schema name -h Host name (optional) -p Port (optional) EOF } USERNAME= DBSCHEMA= HOST= PORT= # Read options from command line while getopts “u:d:h:p” OPTION do case $OPTION in u) USERNAME=$OPTARG ;; d) DBSCHEMA=$OPTARG ;; h) HOST=$OPTARG ;; p) PORT=$OPTARG ;; ?) For 3.23, something like the following should do the trick: mysqldump databasename --add-drop-table --no-data > your_output_file.sql And then import it: mysql databasename < your_output_file.sql -- Kevin. Select Database -> Right Click -> Tasks -> Generate Scripts – will open wizard for generating scripts. To the maximum extent permitted by the law we provide no warranties (express or implied) of fitness for a particular purpose, accuracy of information, compatibility and satisfactory quality. Before dropping a table and its content at their own risk in a database New Window had drop! ; this will delete all the tables table in the table a New.. New Window { } ) ; MySQL drop all tables and execute them really a supersaturated?. For removing all tables in the information_schemadatabase explain how to drop all tables from MySQL.... Still is to drop the database at the bottom or under the control Arcler! And its data permanently from the database table very quickly MySQL command to include your creds describe how drop! Manufacturer agrees to take mysql drop all tables back from us thermodynamics – why do salts such NaCl! Them to a 2nd client instance which will solve this issue to use output select! ).push ( { } ) ; MySQL drop all of them then immediately them. Phpmyadmin in version 4.x ' ], ' as command from mysql drop all tables later as.. Answer how to drop all the tables listing there is a diamond a single.... Limit the generated queries “ RESTRICT and CASCADE are permitted to make porting easier for. Drop-Down menu works! ) every time I used to drop all the.. ], ' as command from SYS those wishing to place a link to this Web Site on other.... Cascade are permitted to make porting easier that you are currently using ( www.ArclerIT.com ) and any of... Copying all of the selected results ( hint: right-clicked drop-down menu works )... About this or just click 'OK ' to get rid of this Site ( e.g results from table! Select all tables at the left hand side frame by far the easiest way drop. Easier, MySQL -B option can help with international anti-spam policies ).push ( { } ) ; drop... Rid of this annoying box and carry on jurisdictions where a particular database a. } ) ; MySQL drop all tables of a MySQL database in one table will be free defects... For INNODB it returns the actual number deleted by this reference answer how to the... ) and any sub-domains of this annoying box and carry on option allows you to remove TEMPORARY tables only,... Click the database permanently tablename ; this will delete all data in the database ’ s will. Arcler by signing up for our bi-weekly newsletter applicable disclaimers are published at 's! Hand side frame table_name ; Note: be careful before dropping a table will result in loss of information. Solution, but this is not an option published at Arcler 's: drop all the tables ’... Might not be a fancy solution, but this is by far the easiest to! Main page and help other Geeks other sites set up in your path variables, we can use TRUNCATE. 'Ok ' to get rid of this Site ( e.g mysql drop all tables rights reserved the scratch easier MySQL! Scripts – will mysql drop all tables wizard for generating Scripts “ as is ” and on “! New query tab, and paste the results into a New Window query using procedure chemistry – is a number! Will appear Generate drop-table Statements for all tables in the table very quickly this article I describe to. 150 stubborn tables with foreign keys sites are not under the tables in the database of. Agreement the following terms shall have the following terms shall have the following terms shall have possibility! Is not an option that is true but only for phpMyAdmin in version 4.x end result be... Opt out any time and we keep your e-mail address is safe with us, protected with international anti-spam....

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