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https://dev.mysql.com/doc/refman/8.0/en/with.html
Consider these statements that create a small data set that shows, for each employee in a company, the employee name and ID number, and the ID of the employee's manager. CTEs are similar to tables created with CREATE [TEMPORARY] TABLE but need not ... A common table expression (CTE) is a named temporary result set that exists within the scope of a single statement and that can be referred to later within that statement, possibly multiple ...
https://dev.mysql.com/doc/refman/8.0/en/archive-storage-engine.html
The ARCHIVE engine also supports the AUTO_INCREMENT table option in CREATE TABLE statements to specify the initial sequence value for a new table or reset the sequence value for an existing table, respectively. When you create an ARCHIVE table, the ... The ARCHIVE storage engine produces special-purpose tables that store large amounts of unindexed data in a very small ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-system-variables.html
The default setting (which is the maximum permitted sequence number for a transaction in a GTID) means that state transfer from a donor's binary log is virtually always attempted rather than cloning. Group members that are still online can ... This ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-storage-engine.html
To specify explicitly that you want a MyISAM table, indicate that with an ENGINE table option: CREATE TABLE t (i INT) ENGINE = MYISAM; In MySQL 8.0, it is normally necessary to use ENGINE to specify the MyISAM storage engine because InnoDB is the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-logs-cluster-log.html
Keep GCI = current_gci oldest restorable GCI = old_gci The local checkpoint having sequence ID lcp has been started on node node_id. LocalCheckpointStarted Checkpoint 7 INFO Node node_id: Local checkpoint lcp completed The local checkpoint having ...
https://dev.mysql.com/doc/refman/8.0/en/charset-binary-collations.html
Binary strings are sequences of bytes and the numeric values of those bytes determine comparison and sort order. The binary collation differs from _bin collations in several respects, discussed in the following sections: The Unit for Comparison and ... This section describes how the binary collation for binary strings compares to _bin collations for nonbinary ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
*/ C-style comment syntax, with a + character following the /* comment opening sequence. Consider this sequence of statements: SET @saved_val = @@SESSION.var_name; SET @@SESSION.var_name = value; SELECT ... SET @@SESSION.var_name = @saved_val; The ... One means of control over optimizer strategies is to set the optimizer_switch system variable (see Section 10.9.2, “Switchable ...
https://dev.mysql.com/doc/refman/8.0/en/ansi-diff-foreign-keys.html
(Although you can write an ON DELETE or ON UPDATE clause as part of the REFERENCES clause, it is also ignored.) This syntax creates a column; it does not create any sort of index or key. row *************************** Table: shirt Create Table: ...
https://dev.mysql.com/doc/refman/8.0/en/caching-sha2-pluggable-authentication.html
As a result, it is possible to create the account and set its password without naming the plugin explicitly: CREATE USER 'sha2user'@'localhost' IDENTIFIED BY 'password'; Another consequence of setting default_authentication_plugin to ...If ... MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/charset-applications.html
To create a database such that its tables use a given default character set and collation for data storage, use a CREATE DATABASE statement like this: CREATE DATABASE mydb CHARACTER SET latin1 COLLATE latin1_swedish_ci; Tables created in the ... For ...