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https://dev.mysql.com/doc/refman/8.0/en/multiple-windows-services.html
To set up multiple MySQL services, you must make sure that each instance uses a different service name in addition to the other parameters that must be unique per instance. Approach 1: Specify the options for all services in one of the standard ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log-mysql-database.html
The contents of the grant tables in the mysql database can be modified directly (for example, with INSERT or DELETE) or indirectly (for example, with GRANT or CREATE USER). Statements that affect mysql database tables are written to the binary log ...This pertains to statements such as INSERT, UPDATE, DELETE, REPLACE, DO, LOAD DATA, SELECT, and TRUNCATE ...This ...
https://dev.mysql.com/doc/refman/8.0/en/foreign-key-optimization.html
If a table has many columns, and you query many different combinations of columns, it might be efficient to split the less-frequently used data into separate tables with a few columns each, and relate them back to the main table by duplicating the ...(To maximize performance, queries try to read as few data blocks as possible from disk; tables with only a few columns can fit more rows in each data ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-st-spatial-reference-systems-table.html
The ST_SPATIAL_REFERENCE_SYSTEMS table provides information about available spatial reference systems (SRSs) for spatial data. Entries in the ST_SPATIAL_REFERENCE_SYSTEMS table are based on the European Petroleum Survey Group (EPSG) data set, ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-processes.html
The processes table contains the following columns: node_id The node's unique node ID in the cluster node_type Type of node (management, data, or API node; see text) node_version Version of the NDB software program running on this node. This table ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-documents-in-tables.html
You can combine traditional data with JSON documents by storing the documents in columns having a native JSON data type. See Section 13.5, “The JSON Data Type” for a detailed description of the data type. In MySQL, a table may contain ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-in-tables.html
You can combine traditional data with JSON documents by storing the documents in columns having a native JSON data type. See Section 13.5, “The JSON Data Type” for a detailed description of the data type. In MySQL, a table may contain ...
https://dev.mysql.com/doc/refman/8.0/en/large-page-support.html
In the event sysctl returns an error relating to the file name, check the name of the corresponding file in /proc/sys/vm and use that instead. Check any configuration files such as my.cnf used by the server, and make sure that ...Before large pages ... Some hardware and operating system architectures support memory pages greater than the default (usually ...Applications that perform a lot of memory accesses may ...
https://dev.mysql.com/doc/refman/8.0/en/drop-table.html
Be careful with this statement! For each table, it removes the table definition and all table data. If the table is partitioned, the statement removes the table definition, all its partitions, all data stored in those partitions, and all partition ...DROP TABLE causes an implicit commit, except when used with the TEMPORARY ...
https://dev.mysql.com/doc/refman/8.0/en/replication-rbr-safe-unsafe.html
If a large number of such statements were executed on the source, this could lead to excessively large error log files. When activated, this causes such warnings not to be written to the error log; instead, for each 50 warnings of this type, a note ... The “safeness” of a statement in MySQL replication refers to whether the statement and its effects can be replicated correctly using statement-based ...