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https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-internals.html
The following configuration options are supported by the config_options table: separator: Used to separate values of a long string into separate values when there are multiple value_columns defined. The mapped key must be a non-Null CHAR or VARCHAR ... InnoDB API for the InnoDB memcached Plugin The InnoDB memcached engine accesses InnoDB through InnoDB APIs, most of which are directly adopted from embedded ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-statistics-table.html
This can have values A (ascending), D (descending), or NULL (not sorted). That is, the number of indexed characters if the column is only partly indexed, NULL if the entire column is indexed. However, prefix lengths for index specifications in ...
https://dev.mysql.com/doc/refman/5.7/en/data-masking-installation.html
This section describes how to install or uninstall MySQL Enterprise Data Masking and De-Identification, which is implemented as a plugin library file containing a plugin and several loadable functions. For general information about installing or ...
https://dev.mysql.com/doc/refman/5.7/en/entering-queries.html
Enter a semicolon to complete the statement, and mysql executes it: mysql> SELECT USER() -> ; +---------------+ | USER() | +---------------+ | jon@localhost | +---------------+ The '> and "> prompts occur during string collection (another way of ...
https://dev.mysql.com/doc/refman/5.7/en/mysqlcheck.html
--debug[=debug_options], -# [debug_options] Command-Line Format --debug[=debug_options] Type String Default Value d:t:o Write a debugging log. --default-character-set=charset_name Command-Line Format --default-character-set=charset_name Type String ... The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html
For example: mysql> CREATE TABLE test (a INT NOT NULL AUTO_INCREMENT, -> PRIMARY KEY (a), KEY(b)) -> ENGINE=InnoDB SELECT b,c FROM test2; This creates an InnoDB table with three columns, a, b, and c. Retrained attributes are NULL (or NOT NULL) and, ... You can create one table from another by adding a SELECT statement at the end of the CREATE TABLE statement: CREATE TABLE new_tbl [AS] SELECT * FROM orig_tbl; MySQL creates new columns for all elements in the ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-sys-virtual-table.html
CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) GENERATED ALWAYS AS (5) VIRTUAL ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4; However, metadata for such a column does appear in the INNODB_SYS_COLUMNS table. The ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-tables-table.html
Not all storage engines update this time, in which case, the value is always NULL. For views, all TABLES columns are NULL except that TABLE_NAME indicates the view name and TABLE_COMMENT says VIEW. The TABLES table has these columns: TABLE_CATALOG ...
https://dev.mysql.com/doc/refman/5.7/en/obtaining-plugin-information.html
Any that have a PLUGIN_LIBRARY value of NULL are built in and cannot be unloaded. row *************************** PLUGIN_NAME: binlog PLUGIN_VERSION: 1.0 PLUGIN_STATUS: ACTIVE PLUGIN_TYPE: STORAGE ENGINE PLUGIN_TYPE_VERSION: 50158.0 PLUGIN_LIBRARY: ... There are several ways to determine which plugins are installed in the server: The Information Schema PLUGINS table contains a row for each loaded ...
https://dev.mysql.com/doc/refman/5.7/en/other-vendor-data-types.html
To facilitate the use of code written for SQL implementations from other vendors, MySQL maps data types as shown in the following table. These mappings make it easier to import table definitions from other database systems into MySQL. If you create ...