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https://dev.mysql.com/doc/refman/8.0/en/data-dictionary-usage-differences.html
For example: SELECT TABLE_SCHEMA AS table_schema, TABLE_NAME AS table_name FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'users'; mysqldump and mysqlpump no longer dump the INFORMATION_SCHEMA database, even if explicitly named on the command ...
https://dev.mysql.com/doc/refman/8.0/en/load-xml.html
The tagname in the optional ROWS IDENTIFIED BY clause must also be given as a literal string, and must be surrounded by angle brackets (< and >). LOAD XML acts as the complement of running the mysql client in XML output mode (that is, starting the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
For additional information, see the description of the SpinMethod parameter, the listed DUMP commands, and Section 25.5.29, “ndb_top — View CPU usage information for NDB threads”. This is intended to serve as a replacement for obtaining this ... The following sections describe changes in the implementation of MySQL NDB Cluster in NDB Cluster 8.0 through 8.0.41, as compared to earlier release ...
https://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html
To investigate database page corruption, you might dump your tables from the database with SELECT ... In such cases, you can use the innodb_force_recovery option to force the InnoDB storage engine to start up while preventing background operations ...Usually, most of the data obtained in this way is ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldump-copying-to-other-server.html
On Server 1: $> mysqldump --databases db1 > dump.sql Copy the dump file from Server 1 to Server 2. On Server 2: $> mysql < dump.sql Use of --databases with the mysqldump command line causes the dump file to include CREATE DATABASE and USE ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldump-upgrade-testing.html
Then you can dump the database and database object definitions from the production server and load them into the new server to verify that they are handled properly. (This is also useful for testing downgrades.) On the production server: $> ... When ...
https://dev.mysql.com/doc/refman/8.0/en/backup-policy.html
For example, MySQL Enterprise Backup can perform a physical backup of an entire instance, with optimizations to minimize overhead and avoid disruption when backing up InnoDB data files; mysqldump provides online logical backup. This backup operation ...A full backup (a snapshot of the data at a point in time) can be done in MySQL with several ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-redo-log-reader.html
The name of the file to be read may be followed by one or more of the options listed here: -dump Command-Line Format -dump Print dump info. Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both.
https://dev.mysql.com/doc/refman/8.0/en/upgrade-binary-package.html
Logical Upgrade A logical upgrade involves exporting SQL from the old MySQL instance using a backup or export utility such as mysqldump or mysqlpump, installing the new MySQL server, and applying the SQL to your new MySQL instance. Export your ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-foreign-keys.html
As the default, an ON DELETE NO ACTION or ON UPDATE NO ACTION clause that is specified explicitly does not appear in SHOW CREATE TABLE output or in tables dumped with mysqldump. RESTRICT, which is an equivalent non-default keyword, appears in SHOW ... MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data ...