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https://dev.mysql.com/doc/refman/8.0/en/explain-extended.html
The Message value in SHOW WARNINGS output displays how the optimizer qualifies table and column names in the SELECT statement, what the SELECT looks like after the application of rewriting and optimization rules, and possibly other notes about the ... The EXPLAIN statement produces extra (“extended”) information that is not part of EXPLAIN output but can be viewed by issuing a SHOW WARNINGS statement following ...
https://dev.mysql.com/doc/refman/8.0/en/expressions.html
Expression Syntax Expression Term Notes Temporal Intervals Expression Syntax The following grammar rules define expression syntax in MySQL. For additional information about some of the expression terms, see Expression Term Notes. Expression Term ...
https://dev.mysql.com/doc/refman/8.0/en/flow-control-functions.html
Note The syntax of the CASE operator described here differs slightly from that of the SQL CASE statement described in Section 15.6.5.1, “CASE Statement”, for use inside stored programs. Note There is also an IF statement, which differs from the ...The second syntax returns the result for the first condition that is ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-fine-tuning.html
Note Minimum and maximum word length full-text parameters do not apply to FULLTEXT indexes created using the ngram parser. For MyISAM tables, note the remarks regarding myisamchk in the instructions that follow for rebuilding MyISAM full-text ...You ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-natural-language.html
Note The term “document” may be used interchangeably with the term “row”, and both terms refer to the indexed part of the row. For the preceding query, note that the columns named in the MATCH() function (title and body) are the same as ...
https://dev.mysql.com/doc/refman/8.0/en/grant-tables.html
Note Direct modification of grant tables using statements such as INSERT, UPDATE, or DELETE is discouraged and done at your own risk. Note Although it is possible to “reset” an expired password by setting it to its current value, it is ... The ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-distributed-recovery-connections.html
Note that if the joining member exhausts the list of advertised endpoints without making a connection, it does not fall back to the donor's standard SQL client connection, but switches to another donor. Note that if a remote cloning operation is ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-ip-address-permissions.html
Note When the MySQL communication stack is used for establishing group communications (group_replication_communication_stack=MYSQL), the settings for group_replication_ip_allowlist and group_replication_ip_whitelist are ignored. Note When a ... When ...
https://dev.mysql.com/doc/refman/8.0/en/index.html
For information about which versions have been released, see the MySQL 8.0 Release Notes. For notes detailing the changes in each release, see the MySQL 8.0 Release Notes. Including MySQL NDB Cluster 8.0 Abstract This is the MySQL Reference Manual.
https://dev.mysql.com/doc/refman/8.0/en/information-functions.html
FOUND_ROWS() Note The SQL_CALC_FOUND_ROWS query modifier and accompanying FOUND_ROWS() function are deprecated as of MySQL 8.0.17; expect them to be removed in a future version of MySQL. Note that mysql_insert_id() is only updated after INSERT and ...It may be used to time how quickly MySQL processes the ...