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https://dev.mysql.com/doc/refman/8.4/en/innodb-information-schema-system-tables.html
You can extract metadata about schema objects managed by InnoDB using InnoDB INFORMATION_SCHEMA tables. Traditionally, you would get this type of information using the techniques from Section 17.17, “InnoDB Monitors”, setting up InnoDB monitors ...
https://dev.mysql.com/doc/refman/8.4/en/multiple-column-indexes.html
MySQL can create composite indexes (that is, indexes on multiple columns). For certain data types, you can index a prefix of the column (see Section 10.3.5, “Column Indexes”). MySQL can use multiple-column indexes for queries that test all the ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-replication-conflict-resolution.html
Requirements Source Column Control Conflict Resolution Control Conflict Resolution Functions Conflict Resolution Exceptions Table Conflict Detection Status Variables Examples When using a replication setup involving multiple sources (including ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-columns-range.html
Range columns partitioning is similar to range partitioning, but enables you to define partitions using ranges based on multiple column values. In addition, you can define the ranges using columns of types other than integer types. RANGE COLUMNS ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-limitations.html
This section discusses current restrictions and limitations on MySQL partitioning support. The following constructs are not permitted in partitioning expressions: Stored procedures, stored functions, loadable functions, or plugins. For a list of ...
https://dev.mysql.com/doc/refman/8.4/en/query-attributes.html
The most visible part of an SQL statement is the text of the statement. Clients can also define query attributes that apply to the next statement sent to the server for execution: Attributes are defined prior to sending the statement. Attributes ...
https://dev.mysql.com/doc/refman/8.4/en/replication-gtids-concepts.html
A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (the source). This identifier is unique not only to the server on which it originated, but is unique across ...
https://dev.mysql.com/doc/refman/8.4/en/scalar-subqueries.html
In its simplest form, a subquery is a scalar subquery that returns a single value. A scalar subquery is a simple operand, and you can use it almost anywhere a single column value or literal is legal, and you can expect it to have those ...
https://dev.mysql.com/doc/refman/8.4/en/select.html
SELECT [ALL | DISTINCT | DISTINCTROW ] [HIGH_PRIORITY] [STRAIGHT_JOIN] [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT] [SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS] select_expr [, select_expr] ... [into_option] [FROM table_references [PARTITION ...
https://dev.mysql.com/doc/refman/8.4/en/show-procedure-code.html
SHOW PROCEDURE CODE proc_name This statement is a MySQL extension that is available only for servers that have been built with debugging support. It displays a representation of the internal implementation of the named stored procedure. A similar ...