What is Mysqldump utility?
What is Mysqldump utility?
The mysqldump client utility performs logical backups, producing a set of SQL statements that can be executed to reproduce the original database object definitions and table data. It dumps one or more MySQL databases for backup or transfer to another SQL server.
What is Mysqldump single transaction?
Mysqldump with Transactions The –single-transaction flag will start a transaction before running. Rather than lock the entire database, this will let mysqldump read the database in the current state at the time of the transaction, making for a consistent data dump.
How do I access Mysqldump?
To dump/export a MySQL database, execute the following command in the Windows command prompt: mysqldump -u username -p dbname > filename. sql . After entering that command you will be prompted for your password.
Does Mysqldump lock the database?
By default, the mysqldump utility, which allows to back a MySQL database, will perform a lock on all tables until the backup is complete. You can use the Mysqldump utility with a specific flag, –single-transaction, which will allow you to backup your database tables without locking them.
How do I backup a MySQL procedure?
Backup Stored Procedures and Routines
- mysqldump -u root -p –routines mydb > mydb.sql.
- mysqldump –routines –no-create-info –no-data –no-create-db –skip-opt mydb > mydb.sql.
- mysql -u root -p mydb < mydb.sql.
How is mysqldump used to export a database?
There are three ways in which the mysqldump tool can be used: First, it can be used to export specific tables in a MySQL database. Second, it can be used to export databases. Third, it can be used to export an entire MySQL server. In the following sections, you will perform each of those actions.
How to backup and restore databases using the mysqldump command?
If you want to generate the backup of the data without the database structure, then you must use the –no-create-info option in the mysqldump command. The following command generates the backup of data of the sakila database. mysqldump -u root -p sakila –no-create-info > C:MySQLBackupsakila_data_only_20200424.sql See the following image.
When to use alter database statement in mysqldump?
mysqldump output can include ALTER DATABASE statements that change the database collation. These may be used when dumping stored programs to preserve their character encodings. To reload a dump file containing such statements, the ALTER privilege for the affected database is required.
What are the advantages and disadvantages of mysqldump?
mysqldump advantages include the convenience and flexibility of viewing or even editing the output before restoring. You can clone databases for development and DBA work, or produce slight variations of an existing database for testing.