29
1
Usually I open Terminal.app and connect to a remote MySQL database.
Then I use this command to drop a table:
mysql> drop table [table name];
But what I need is the command line to drop all tables in the database.
If I use:
mysql> drop database [database name];
I'll destroy the database completely and I won't be able to create tables again. Am I right?
chefnelone
Posted 2011-07-08T11:40:19.960
Reputation: 525
28
You can drop the database then immediately recreate it:
mysql> drop database [database name];
mysql> create database [database name];
Or you could use a script to drop each table in the database.
William Jackson
Posted 2011-07-08T11:40:19.960
Reputation: 7 646
1
it's totally unsafe, see the comments http://stackoverflow.com/a/12403742/1713660
– vladkras – 2015-10-29T08:01:30.450ok, just to be sure: I connect to remote database in Terminal with this line: /Applications/MAMP/Library/bin/mysql -h 80.54.554.10 -u adm_user -p my_db. After dropping and creating the database as you said will I need to change this connection values or they remain the same? – chefnelone – 2011-07-08T11:57:38.197
1@chef - Dropping all tables and dropping the whole database does not have the same effect. If you drop only the tables any database wide permissions will remain, not so if you drop/recreate the database. – Nifle – 2011-07-08T21:16:14.643
10@chefnelone : Be careful !!! Dropping a database drops stored procedures and user-defined views as well. – RolandoMySQLDBA – 2011-07-09T01:03:15.770
Quite clear for me. I'll go with the script to delete each table. – chefnelone – 2011-07-11T07:31:12.470
10
You can try the following command:
mysqldump --no-data --add-drop-table DB_NAME | grep ^DROP | mysql -v DB_NAME
Or:
mysql --silent --skip-column-names -e "SHOW TABLES" DB_NAME | xargs -L1 -I% echo 'DROP TABLE `%`;' | mysql -v DB_NAME
Where DB_NAME is your database name. Database credentials you can specify either in ~/.my.cnf or adding them to the command (e.g. -uroot -proot).
This method has some advantages over dropping and creating the database in case your database user doesn't have permission to drop it.
kenorb
Posted 2011-07-08T11:40:19.960
Reputation: 16 795
1Confirmed second example, awesome. Add db credentials as additional flags before --silent and -v / --verbose respectively like: --user=username --password=password --host=host.name – here – 2015-05-20T03:41:18.230
Good idea. But have some problem when there is FOREIGN KEY. I add | sort -r to reverse line, but still not compatible some db. – Fancyoung – 2015-12-03T06:45:17.373
2
mysql -u USERHERE -pPASSWORDHERE --silent --skip-column-names -e "SHOW TABLES" DATABASENAMEHERE | xargs -L1 -I% echo 'SET FOREIGN_KEY_CHECKS = 0; DROP TABLE%; SET FOREIGN_KEY_CHECKS = 1;' | mysql -u USERHERE -pPASSWORDHERE -v DATABASENAMEHERE
sveilleux2
Posted 2011-07-08T11:40:19.960
Reputation: 121
2Welcome to Super User! While this may answer the question, it would be a better answer if you could explain why it does so. We’re looking for comprehensive, high-quality answers that provide some explanation and context. Don’t just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don’t include explanations may be removed. Also, check your formatting. – G-Man Says 'Reinstate Monica' – 2015-05-29T01:20:10.497
Not forget set foreign_key_checks = 1 after drop tables: see http://stackoverflow.com/a/2873991/4306855
mysql -u USERHERE -pPASSWORDHERE --silent --skip-column-names -e "SHOW TABLES" DATABASENAMEHERE | xargs -L1 -I% echo 'SET FOREIGN_KEY_CHECKS = 0; DROP TABLE%;SET FOREIGN_KEY_CHECKS = 1;' | mysql -u USERHERE -pPASSWORDHERE -v DATABASENAMEHERE
MySQL Empty Database / Delete or Drop All Tables, MySQL - Drop all Tables in a Database Using a Single Command Line Command, Drop all tables from a MySQL Database without deletion, ... – slhck – 2011-07-08T11:44:01.627