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https://dev.mysql.com/doc/refman/8.0/en/create-view.html
If the view does not exist, CREATE OR REPLACE VIEW is the same as CREATE VIEW. If the view does exist, CREATE OR REPLACE VIEW replaces it. For information about restrictions on view use, see Section 27.9, “Restrictions on Views”. The ...
https://dev.mysql.com/doc/refman/8.0/en/ddl-rewriter.html
MySQL 8.0.16 and higher includes a ddl_rewriter plugin that modifies CREATE TABLE statements received by the server before it parses and executes them. The plugin removes ENCRYPTION, DATA DIRECTORY, and INDEX DIRECTORY clauses, which may be helpful ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-security.html
Where can I find documentation that addresses security issues for MySQL? A.9.2. Is SSL support built into MySQL binaries, or must I recompile the binary myself to enable it? A.9.5. Does MySQL include support for Roles Based Access Control (RBAC)? ...
https://dev.mysql.com/doc/refman/8.0/en/firewall-usage.html
`slow_log`' These log messages may be helpful in identifying the source of attacks, should that be necessary. `slow_log`' These log messages may be helpful in identifying the source of attacks, should that be necessary. Before using MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html
If a high innodb_force_recovery value is required to start InnoDB, there may be corrupted data structures that could cause complex queries (queries containing WHERE, ORDER BY, or other clauses) to fail. In this case, you may only be able to run ...
https://dev.mysql.com/doc/refman/8.0/en/foreign-key-optimization.html
Depending on how the data is distributed, the queries might perform less I/O and take up less cache memory because the relevant columns are packed together on disk. (To maximize performance, queries try to read as few data blocks as possible from ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-configuring-consistency-guarantees.html
Permitted Queries Under Consistency Rules Although all writes are held when using BEFORE_ON_PRIMARY_FAILOVER consistency level, not all reads are blocked to ensure that you can still inspect the server while it is applying backlog after a promotion ... Although the Transaction Synchronization Points section explains that conceptually there are two synchronization points from which you can choose: on read or on write, these terms were a simplification and the terms used in Group Replication are: before and after transaction ...
https://dev.mysql.com/doc/refman/8.0/en/index-btree-hash.html
Understanding the B-tree and hash data structures can help predict how different queries perform on different storage engines that use these data structures in their indexes, particularly for the MEMORY storage engine that lets you choose B-tree or ...B-Tree Index Characteristics Hash Index Characteristics B-Tree Index Characteristics A B-tree index can be used for column comparisons in expressions that use the =, >, >=, <, <=, or BETWEEN ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-buffer-page-table.html
The INNODB_BUFFER_PAGE table provides information about each page in the InnoDB buffer pool. For related usage information and examples, see Section 17.15.5, “InnoDB INFORMATION_SCHEMA Buffer Pool Tables”. Do not query this table on a ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tables-table.html
The information_schema_stats_expiry system variable defines the period of time before cached table statistics expire. If there are no cached statistics or statistics have expired, statistics are retrieved from storage engines when querying table ...