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https://dev.mysql.com/doc/refman/5.7/en/locking-issues.html
MySQL manages contention for table contents using locking: Internal locking is performed within the MySQL server itself to manage contention for table contents by multiple threads. This type of locking is internal because it is performed entirely ...External locking occurs when the server and other programs lock MyISAM table files to coordinate among themselves which program can access the tables at which ...
https://dev.mysql.com/doc/refman/5.7/en/multiple-windows-servers.html
General instructions for running MySQL from the command line or as a service are given in Section 2.3, “Installing MySQL on Microsoft Windows”. The following sections describe how to start each server with different values for those options that ... You can run multiple servers on Windows by starting them manually from the command line, each with appropriate operating parameters, or by installing several servers as Windows services and running them that ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-performance.html
The following performance issues are specific to or especially pronounced in NDB Cluster: Range scans. There are query performance issues due to sequential access to the NDB storage engine; it is also relatively more expensive to do many range ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-print-backup-file.html
These files are found in the data node's backup directory under the subdirectory BACKUP-#, where # is the sequence number for the backup. For more information about cluster backup files and their contents, see Section 21.6.8.1, “NDB Cluster Backup ...Usage ndb_print_backup_file file_name file_name is the name of a cluster backup ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-print-frag-file.html
It is intended for use in helping to diagnose issues with data node restarts. For more information about cluster fragment files, see NDB Cluster Data Node File System Directory. Each fragment file contains records of the fragments belonging to each ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-applier-configuration-table.html
(CHANGE MASTER TO option: MASTER_DELAY) TRUNCATE TABLE is not permitted for the replication_applier_configuration table. This table shows the configuration parameters that affect transactions applied by the replica. Parameters stored in the table ...
https://dev.mysql.com/doc/refman/5.7/en/plugin-services.html
For developer information about writing plugin services, see MySQL Services for Plugins. MySQL server plugins have access to server “plugin services.” The plugin services interface complements the plugin API by exposing server functionality ...
https://dev.mysql.com/doc/refman/5.7/en/problems-with-alias.html
An alias can be used in a query select list to give a column a different name. This restriction is imposed because when the WHERE clause is evaluated, the column value may not yet have been determined. In the select list of a query, a quoted column ...
https://dev.mysql.com/doc/refman/5.7/en/programs.html
It also discusses the general syntax for specifying options when you run these programs. Most programs have options that are specific to their own operation, but the option syntax is similar for all of them. This chapter provides a brief overview ...
https://dev.mysql.com/doc/refman/5.7/en/reloading-delimited-text-dumps.html
For backups produced with mysqldump --tab, each table is represented in the output directory by an .sql file containing the CREATE TABLE statement for the table, and a .txt file containing the table data. To reload a table, first change location ...