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https://dev.mysql.com/doc/refman/9.7/en/data-masking-plugin-usage.html
Before using MySQL Enterprise Data Masking, install it according to the instructions provided at Section 8.5.4.1, “MySQL Enterprise Data Masking Plugin Installation”. To use MySQL Enterprise Data Masking in applications, invoke the functions ...
https://dev.mysql.com/doc/refman/9.7/en/declare-local-variable.html
type [DEFAULT value] This statement declares local variables within stored programs. To provide a default value for a variable, include a DEFAULT clause. The value can be specified as an expression; it need not be a constant. If the DEFAULT clause ...
https://dev.mysql.com/doc/refman/9.7/en/delete.html
DELETE is a DML statement that removes rows from a table. A DELETE statement can start with a WITH clause to define common table expressions accessible within the DELETE. Single-Table Syntax DELETE [LOW_PRIORITY] [QUICK] [IGNORE] FROM tbl_name ...
https://dev.mysql.com/doc/refman/9.7/en/diagnostics-area.html
SQL statements produce diagnostic information that populates the diagnostics area. Standard SQL has a diagnostics area stack, containing a diagnostics area for each nested execution context. Standard SQL also supports GET STACKED DIAGNOSTICS syntax ...
https://dev.mysql.com/doc/refman/9.7/en/drop-database.html
DROP {DATABASE | SCHEMA} [IF EXISTS] db_name DROP DATABASE drops all tables in the database and deletes the database. Be very careful with this statement! To use DROP DATABASE, you need the DROP privilege on the database. Important When a database ...
https://dev.mysql.com/doc/refman/9.7/en/encrypted-connection-protocols-ciphers.html
MySQL supports multiple TLS protocols and ciphers, and enables configuring which protocols and ciphers to permit for encrypted connections. It is also possible to determine which protocol and cipher the current session uses. Supported TLS Protocols ...
https://dev.mysql.com/doc/refman/9.7/en/example-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column ...
https://dev.mysql.com/doc/refman/9.7/en/example-maximum-row.html
Task: Find the number, dealer, and price of the most expensive article.
https://dev.mysql.com/doc/refman/9.7/en/exists-and-not-exists-subqueries.html
If a subquery returns any rows at all, EXISTS subquery is TRUE, and NOT EXISTS subquery is FALSE. For example: SELECT column1 FROM t1 WHERE EXISTS (SELECT * FROM t2); Traditionally, an EXISTS subquery starts with SELECT *, but it could begin with ...
https://dev.mysql.com/doc/refman/9.7/en/extensions-to-ansi.html
MySQL Server supports some extensions that you are not likely to find in other SQL DBMSs. Be warned that if you use them, your code is most likely not portable to other SQL servers. For example, MySQL Server recognizes the STRAIGHT_JOIN keyword in ...