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https://dev.mysql.com/doc/refman/8.0/en/information-schema-views-table.html
IS_UPDATABLE MySQL sets a flag, called the view updatability flag, at CREATE VIEW time. Notes MySQL permits different sql_mode settings to tell the server the type of SQL syntax to support. For example, you might use the ANSI SQL mode to ensure ...
https://dev.mysql.com/doc/refman/8.0/en/other-vendor-data-types.html
To facilitate the use of code written for SQL implementations from other vendors, MySQL maps data types as shown in the following table. These mappings make it easier to import table definitions from other database systems into MySQL. If you create ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-connection-configuration-table.html
Parameters stored in the table can be changed at runtime with the CHANGE REPLICATION SOURCE TO statement (from MySQL 8.0.23) or CHANGE MASTER TO statement (before MySQL 8.0.23). (CHANGE REPLICATION SOURCE TO option: SOURCE_CONNECT_RETRY, CHANGE ...
https://dev.mysql.com/doc/refman/8.0/en/replication-binlog-encryption.html
From MySQL 8.0.14, binary log files and relay log files can be encrypted, helping to protect these files and the potentially sensitive data contained in them from being misused by outside attackers, and also from unauthorized viewing by users of ...
https://dev.mysql.com/doc/refman/8.0/en/server-configuration.html
The MySQL server, mysqld, has many command options and system variables that can be set at startup to configure its operation. To determine the default command option and system variable values used by the server, execute this command: $> mysqld ...
https://dev.mysql.com/doc/refman/8.0/en/source-ssl-library-configuration.html
If the installed OpenSSL version is older than 1.0.1, CMake produces an error at MySQL configuration time. If you compile MySQL from a source distribution, CMake configures the distribution to use the installed OpenSSL library by default. The ... An ...
https://dev.mysql.com/doc/refman/8.0/en/subquery-optimization-with-exists.html
WHERE subquery_where) MySQL evaluates queries “from outside to inside.” That is, it first obtains the value of the outer expression outer_expr, and then runs the subquery and captures the rows that it produces. WHERE subquery_where AND ...
https://dev.mysql.com/doc/refman/8.0/en/show-events.html
In its simplest form, SHOW EVENTS lists all of the events in the current schema: mysql> SELECT CURRENT_USER(), SCHEMA(); +----------------+----------+ | CURRENT_USER() | SCHEMA() | +----------------+----------+ | jon@ghidora | myschema | ... SHOW ...
https://dev.mysql.com/doc/refman/8.0/en/nested-loop-joins.html
MySQL executes joins between tables using a nested-loop algorithm or variations on it. Nested-Loop Join Algorithm Block Nested-Loop Join Algorithm Nested-Loop Join Algorithm A simple nested-loop join (NLJ) algorithm reads rows from the first table ...For example, if 10 rows are read into a buffer and the buffer is passed to the next inner loop, each row read in the inner loop can be compared against all 10 rows in the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-triggers.html
If an upgraded replication source server still has old replicas using MySQL versions that do not support multiple triggers, an error occurs on those replicas if a trigger is created on the source for a table that already has a trigger with the same ...It is sufficient to switch to statement-based replication only for those statements where you want this effect, and to use row-based replication the rest of the ...