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https://dev.mysql.com/doc/refman/9.7/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/9.7/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/9.7/en/vector.html
A VECTOR is a structure that can hold up to a specified number of entries N, defined as shown here: VECTOR(N) Each entry is a 4-byte (single-precision) floating-point value. To declare a VECTOR column of the default length, define it as VECTOR with ...
https://dev.mysql.com/doc/refman/9.7/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/9.7/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/9.7/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 The YEAR(4) data type using an explicit display ...
https://dev.mysql.com/doc/refman/9.7/en/charset-applications.html
For applications that store data using the default MySQL character set and collation (utf8mb4, utf8mb4_0900_ai_ci), no special configuration should be needed. If applications require data storage using a different character set or collation, you ...
https://dev.mysql.com/doc/refman/9.7/en/charset-cp932.html
Why is cp932 needed? In MySQL, the sjis character set corresponds to the Shift_JIS character set defined by IANA, which supports JIS X0201 and JIS X0208 characters. (See http://www.iana.org/assignments/character-sets.) However, the meaning of ...
https://dev.mysql.com/doc/refman/9.7/en/charset-unicode-sets.html
This section describes the collations available for Unicode character sets and their differentiating properties. MySQL supports multiple Unicode character sets: utf8mb4: A UTF-8 encoding of the Unicode character set using one to four bytes per ...
https://dev.mysql.com/doc/refman/9.7/en/components.html
MySQL Server includes a component-based infrastructure for extending server capabilities. A component provides services that are available to the server and other components. (With respect to service use, the server is a component, equal to other ...