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https://dev.mysql.com/doc/refman/5.7/en/partitioning-limitations.html
However, the result must be an integer value or NULL (except in the case of [LINEAR] KEY partitioning, as discussed elsewhere in this chapter; see Section 22.2, “Partitioning Types”, for more information). A partitioning key may not be a ...
https://dev.mysql.com/doc/refman/5.7/en/ldap-pluggable-authentication.html
(To associate an LDAP user DN with a MySQL account, include a BY clause that specifies an authentication string in the CREATE USER statement that creates the account.) If the MySQL account names no LDAP user DN, LDAP authentication uses the user ...
https://dev.mysql.com/doc/refman/5.7/en/pattern-matching.html
MySQL provides standard SQL pattern matching as well as a form of pattern matching based on extended regular expressions similar to those used by Unix utilities such as vi, grep, and sed. SQL pattern matching enables you to use _ to match any ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-gtids.html
gtid_executed System Variable gtid_executed Scope Global Dynamic No Type String Unit set of GTIDs When used with global scope, this variable contains a representation of the set of all transactions executed on the server and GTIDs that have been set ... The MySQL Server system variables described in this section are used to monitor and control Global Transaction Identifiers ...
https://dev.mysql.com/doc/refman/5.7/en/reset-master.html
The value of the gtid_purged system variable is set to an empty string (''), the global value (but not the session value) of the gtid_executed system variable is set to an empty string, and the mysql.gtid_executed table is cleared (see ... RESET ...
https://dev.mysql.com/doc/refman/5.7/en/encrypted-connection-protocols-ciphers.html
If you set a TLS version parameter to the empty string, encrypted connections cannot be established: tls_version: The server does not permit encrypted incoming connections. MySQL supports multiple TLS protocols and ciphers, and enables configuring ...
https://dev.mysql.com/doc/refman/5.7/en/server-status-variables.html
If the group is operating in multi-primary mode, shows an empty string. The MySQL server maintains many status variables that provide information about its operation. You can view these variables and their values by using the SHOW [GLOBAL | ...
https://dev.mysql.com/doc/refman/5.7/en/time-zone-support.html
As a string indicating an offset from UTC of the form [H]H:MM, prefixed with a + or -, such as '+10:00', '-6:00', or '+05:30'. This section describes the time zone settings maintained by MySQL, how to load the system tables required for named time ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-memory.html
To replicate this effect to replicas, the first time that the source uses a given MEMORY table after startup, it logs an event that notifies replicas that the table must be emptied by writing a DELETE or (from MySQL 5.7.32) TRUNCATE TABLE statement ... When a replication source server shuts down and restarts, its MEMORY tables become ...
https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html
Given this statement: CREATE TABLE t AS SELECT INET6_NTOA(expr) AS c1; The resulting table would have this definition: CREATE TABLE t (c1 VARCHAR(39) CHARACTER SET utf8 DEFAULT NULL); The return string uses lowercase letters for IPv6 addresses. The ...