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https://dev.mysql.com/doc/refman/5.7/en/information-schema-column-privileges-table.html
The COLUMN_PRIVILEGES table has these columns: GRANTEE The name of the account to which the privilege is granted, in 'user_name'@'host_name' format. IS_GRANTABLE YES if the user has the GRANT OPTION privilege, NO otherwise. TABLE_SCHEMA The name of ...TABLE_CATALOG The name of the catalog to which the table containing the column ...
https://dev.mysql.com/doc/refman/5.7/en/language-structure.html
This chapter discusses the rules for writing the following elements of SQL statements when using MySQL: Literal values such as strings and numbers Identifiers such as database, table, and column names Keywords and reserved words User-defined and ...
https://dev.mysql.com/doc/refman/5.7/en/postinstallation.html
When you are ready to create additional user accounts, you can find information on the MySQL access control system and account management in Section 6.2, “Access Control and Account Management”. This section discusses tasks that you should ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-temp-table-info-table.html
The INNODB_TEMP_TABLE_INFO table provides information about user-created InnoDB temporary tables that are active in an InnoDB instance. It does not provide information about internal InnoDB temporary tables used by the optimizer. For usage ...The ...
https://dev.mysql.com/doc/refman/5.7/en/query-cache-thread-states.html
checking privileges on cached query The server is checking whether the user has privileges to access a cached query result. This can happen for any statement that needs to perform some query cache operation, such as an INSERT or DELETE that ...
https://dev.mysql.com/doc/refman/5.7/en/blackhole-storage-engine.html
When you create a BLACKHOLE table, the server creates a table format file in the database directory. In such a case, it is possible to set up on the source host a “dummy” replica process whose default storage engine is BLACKHOLE, depicted as ...
https://dev.mysql.com/doc/refman/5.7/en/regexp.html
(Unless the NO_BACKSLASH_ESCAPES SQL mode is enabled, in which case no escape character is used.) Regular expression operations use the character set and collation of the string expression and pattern arguments when deciding the type of a character ... Table 12.14 Regular Expression Functions and Operators Name Description NOT REGEXP Negation of REGEXP REGEXP Whether string matches regular expression RLIKE Whether string matches regular expression A regular expression is a powerful way of specifying a pattern for a complex ...
https://dev.mysql.com/doc/refman/5.7/en/file-permissions.html
For example, setting UMASK=0600 is equivalent to UMASK=384 because 0600 octal is 384 decimal. If you have problems with file permissions, the UMASK or UMASK_DIR environment variable might be set incorrectly when mysqld starts. For example, mysqld ...If this is unsuitable, create the error file manually with the desired access mode prior to executing ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-summary.html
All servers therefore receive the same set of transactions in the same order, and a global total order is established for the transactions. The replication group is a set of servers that each have their own entire copy of the data (a shared-nothing ... Group Replication is a technique that can be used to implement fault-tolerant ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-acid.html
The ACID model is a set of database design principles that emphasize aspects of reliability that are important for business data and mission-critical applications. In cases where you have additional software safeguards, ultra-reliable hardware, or ...Because of the many possibilities depending on the capabilities of your CPU, network, and storage devices, this aspect is the most complicated to provide concrete guidelines ...MySQL includes components such as the InnoDB storage ...