Search Results
https://dev.mysql.com/doc/refman/8.4/en/two-digit-years.html
Date values with 2-digit years are ambiguous because the century is unknown. Such values must be interpreted into 4-digit form because MySQL stores years internally using 4 digits. For DATETIME, DATE, and TIMESTAMP types, MySQL interprets dates ...
https://dev.mysql.com/doc/refman/8.4/en/update.html
UPDATE is a DML statement that modifies rows in a table. An UPDATE statement can start with a WITH clause to define common table expressions accessible within the UPDATE. Single-table syntax: UPDATE [LOW_PRIORITY] [IGNORE] table_reference SET ...
https://dev.mysql.com/doc/refman/8.4/en/user-variables.html
You can store a value in a user-defined variable in one statement and refer to it later in another statement. This enables you to pass values from one statement to another. User variables are written as @var_name, where the variable name var_name ...
https://dev.mysql.com/doc/refman/8.4/en/using-date.html
You should use this format in UPDATE expressions and in the WHERE clause of SELECT statements. For example: SELECT * FROM t1 WHERE date >= '2003-05-05'; As a convenience, MySQL automatically converts a date to a number if the date is used in numeric ...
https://dev.mysql.com/doc/refman/8.4/en/using-innodb-tables.html
InnoDB tables are created using the CREATE TABLE statement; for example: CREATE TABLE t1 (a INT, b CHAR (20), PRIMARY KEY (a)) ENGINE=InnoDB; The ENGINE=InnoDB clause is not required when InnoDB is defined as the default storage engine, which it is ...
https://dev.mysql.com/doc/refman/8.4/en/using-system-variables.html
The MySQL server maintains many system variables that configure its operation. Section 7.1.8, “Server System Variables”, describes the meaning of these variables. System variables can be set at server startup using options on the command line ...
https://dev.mysql.com/doc/refman/8.4/en/validate-password.html
The validate_password component serves to improve security by requiring account passwords and enabling strength testing of potential passwords. This component exposes system variables that enable you to configure password policy, and status ...
https://dev.mysql.com/doc/refman/8.4/en/x-plugin-connection-compression.html
X Plugin supports compression of messages sent over X Protocol connections. Connections can be compressed if the server and the client agree on a mutually supported compression algorithm. Enabling compression reduces the number of bytes sent over ...
https://dev.mysql.com/doc/refman/8.4/en/xml-functions.html
Table 14.16 XML Functions Name Description ExtractValue() Extract a value from an XML string using XPath notation UpdateXML() Return replaced XML fragment This section discusses XML and related functionality in MySQL. Note It is possible to obtain ...
https://dev.mysql.com/doc/refman/8.4/en/year.html
The YEAR type is a 1-byte type used to represent year values. It can be declared as YEAR with an implicit display width of 4 characters, or equivalently as YEAR(4) with an explicit display width. Note he YEAR(4) data type using an explicit display ...