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https://dev.mysql.com/doc/refman/8.0/en/charset-gb18030.html
In MySQL, the gb18030 character set corresponds to the “Chinese National Standard GB 18030-2005: Information technology — Chinese coded character set”, which is the official character set of the People's Republic of China (PRC). Case folding ...
https://dev.mysql.com/doc/refman/8.0/en/create-resource-group.html
This statement creates a new resource group and assigns its initial attribute values. The VCPU attribute indicates the CPU affinity; that is, the set of virtual CPUs the group can use: If VCPU is not given, the resource group has no CPU affinity and ... CREATE RESOURCE GROUP group_name TYPE = {SYSTEM|USER} [VCPU [=] vcpu_spec [, vcpu_spec] ...] [THREAD_PRIORITY [=] N] [ENABLE|DISABLE] vcpu_spec: {N | M - N} CREATE RESOURCE GROUP is used for resource group management (see Section 7.1.16, “Resource ...
https://dev.mysql.com/doc/refman/8.0/en/descending-indexes.html
Descending indexes also make it possible for the optimizer to use multiple-column indexes when the most efficient scan order mixes ascending order for some columns and descending order for others. Descending indexes are supported for ordinary ...
https://dev.mysql.com/doc/refman/8.0/en/gpg-key-archived-packages.html
The following GPG public build key (keyID 3A79BD29) can be used to verify the authenticity and integrity of MySQL packages versions 8.0.28 through 8.0.35, 8.1.0, and 8.2.0. For signature checking instructions, see Section 2.1.4.2, “Signature ...
https://dev.mysql.com/doc/refman/8.0/en/handler.html
HANDLER tbl_name OPEN [ [AS] alias] HANDLER tbl_name READ index_name { = | <= | >= | < | > } (value1,value2,...) [ WHERE where_condition ] [LIMIT ... ] HANDLER tbl_name READ index_name { FIRST | NEXT | PREV | LAST } [ WHERE where_condition ] [LIMIT ...If you do not use an alias, but open the table using a table name qualified by the database name, further references must use the unqualified table ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-profiling-table.html
Its contents correspond to the information produced by the SHOW PROFILE and SHOW PROFILES statements (see Section 15.7.7.30, “SHOW PROFILE Statement”). SOURCE_FUNCTION, SOURCE_FILE, and SOURCE_LINE Information indicating where in the source code ...The table is empty unless the profiling session variable is set ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-st-spatial-reference-systems-table.html
It is always a legal spatial reference system ID and can be used in any computations on spatial data that depend on SRID values. SRS definition parsing occurs on demand when definitions are needed by GIS functions. Parsed definitions are stored in ... The ST_SPATIAL_REFERENCE_SYSTEMS table provides information about available spatial reference systems (SRSs) for spatial ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-user-attributes-table.html
The USER_ATTRIBUTES table (available as of MySQL 8.0.21) provides information about user comments and user attributes. ATTRIBUTE The user comment, user attribute, or both belonging to the account specified by the USER and HOST columns. Attributes ...The USER_ATTRIBUTES table has these columns: USER The user name portion of the account to which the ATTRIBUTE column value ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-configuring-io-capacity.html
The InnoDB master thread and other threads perform various tasks in the background, most of which are I/O related, such as flushing dirty pages from the buffer pool and writing changes from the change buffer to the appropriate secondary indexes. It ...InnoDB attempts to perform these tasks in a way that does not adversely affect the normal working of the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached.html
Important The InnoDB memcached plugin was removed in MySQL 8.3.0, and was deprecated in MySQL 8.0.22. The InnoDB memcached plugin (daemon_memcached) provides an integrated memcached daemon that automatically stores and retrieves data from InnoDB ...