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https://dev.mysql.com/doc/refman/5.7/en/innodb-temporary-tablespace.html
Non-compressed, user-created temporary tables and on-disk internal temporary tables are created in a shared temporary tablespace. Issue a query similar to this one to view temporary tablespace metadata: mysql> SELECT * FROM INFORMATION_SCHEMA.FILES ...If no value is specified for innodb_temp_data_file_path, the default behavior is to create an auto-extending data file named ibtmp1 in the innodb_data_home_dir directory that is slightly larger than ...
https://dev.mysql.com/doc/refman/5.7/en/adding-collation.html
The following sections describe how to add user-defined collations of the first two types to existing character sets. Summary of the procedure for adding a new user-defined collation: Choose a collation ID. The instructions here cover only ... A ...
https://dev.mysql.com/doc/refman/5.7/en/downgrade-binary-package.html
For example: mysqladmin -u root -p shutdown mysqld_safe --user=mysql --datadir=/path/to/existing-datadir Logical Downgrade Logical downgrade involves using mysqldump to dump all tables from the new MySQL version, and then loading the dump file into ... This section describes how to downgrade MySQL binary and package-based installations on ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-introduction.html
For example, Oracle Database users are familiar with querying tables in the Oracle data dictionary. INFORMATION_SCHEMA and Privileges For most INFORMATION_SCHEMA tables, each MySQL user has the right to access them, but can see only the rows in the ... INFORMATION_SCHEMA provides access to database metadata, information about the MySQL server such as the name of a database or table, the data type of a column, or access ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-undo-logs.html
Undo logs that reside in the temporary tablespace are used for transactions that modify data in user-defined temporary tables. An undo log is a collection of undo log records associated with a single read-write transaction. An undo log record ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-enterprise-security.html
MySQL Enterprise Edition provides plugins that implement security features using external services: MySQL Enterprise Edition includes an authentication plugin that enables MySQL Server to use LDAP (Lightweight Directory Access Protocol) to ...PAM ...
https://dev.mysql.com/doc/refman/5.7/en/replication-threads-monitor-main.html
row *************************** Id: 2 User: root Host: localhost:32931 db: NULL Command: Binlog Dump Time: 94 State: Has sent all binlog to slave; waiting for binlog to be updated Info: NULL Here, thread 2 is a Binlog Dump thread that services a ...
https://dev.mysql.com/doc/refman/5.7/en/rewriter-query-rewrite-plugin-reference.html
Users communicate with the plugin by modifying the set of rules stored in this table. The plugin communicates information to users by setting the table's message column. The function is intended to be invoked by the stored procedure, not directly by ...Note The rules table is loaded into the plugin by the flush_rewrite_rules stored ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-operations.html
Renaming an index ALTER TABLE tbl_name RENAME INDEX old_index_name TO new_index_name, ALGORITHM=INPLACE, LOCK=NONE; Adding a FULLTEXT index CREATE FULLTEXT INDEX name ON table(column); Adding the first FULLTEXT index rebuilds the table if there is ...The CREATE INDEX statement only finishes after all transactions that are accessing the table are completed, so that the initial state of the index reflects the most recent contents of the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-online-operations.html
For ALGORITHM=COPY, the mysqld NDB Cluster handler performs the following actions: Tells the data nodes to create an empty copy of the table, and to make the required schema changes to this copy. Online operations are noncopying; that is, they do ...