PDF (US Ltr)
- 43.3Mb
PDF (A4)
- 43.4Mb
Man Pages (TGZ)
- 297.2Kb
Man Pages (Zip)
- 402.4Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-columns-table.html
HAS_DEFAULT A boolean value indicating whether a column that was added instantly using ALTER TABLE ... DEFAULT_VALUE The initial default value of a column that was added instantly using ALTER TABLE ... For related usage information and examples, see ...When a column is dropped, the remaining columns are reordered so that the sequence has no ...
https://dev.mysql.com/doc/refman/8.0/en/replication-gtids-lifecycle.html
A GTID is also assigned to the creation, alteration, or deletion of a database, and of a non-table database object such as a procedure, function, trigger, event, view, user, role, or grant. Whenever the binary log is rotated or the server is shut ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-bulk-data-loading.html
COMMIT; The mysqldump option --opt creates dump files that are fast to import into an InnoDB table, even without wrapping them with the SET autocommit and COMMIT statements. If you have UNIQUE constraints on secondary keys, you can speed up table ...
https://dev.mysql.com/doc/refman/8.0/en/identifier-case-sensitivity.html
Each table within a database corresponds to at least one file within the database directory (and possibly more, depending on the storage engine). Consequently, the case sensitivity of the underlying operating system plays a part in the case ... In ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-security-mysql-privileges.html
This includes all MySQL privilege types (SELECT privilege, UPDATE privilege, DELETE privilege, and so on) granted on the database, table, and column level. The SQL statements used to grant and revoke privileges on NDB tables, databases containing ...
https://dev.mysql.com/doc/refman/8.0/en/where-optimization.html
COUNT(*) on a single table without a WHERE is retrieved directly from the table information for MyISAM and MEMORY tables. This is also done for any NOT NULL expression when used with only one table. For each table in a join, a simpler WHERE is ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-cmp-table.html
The INNODB_CMP and INNODB_CMP_RESET tables provide status information on operations related to compressed InnoDB tables. The INNODB_CMP and INNODB_CMP_RESET tables have these columns: PAGE_SIZE The compressed page size in bytes. row ...COMPRESS_OPS ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-host-cache-table.html
The host_cache_size system variable controls the size of the host cache, as well as the size of the host_cache table. Because the host_cache table exposes the contents of the host cache, it can be examined using SELECT statements. The host_cache ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-log-status-table.html
The log_status table provides information that enables an online backup tool to copy the required log files without locking those resources for the duration of the copy process. When the log_status table is queried, the server blocks logging and ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-metadata-locks-table.html
Metadata locking applies not just to tables, but also to schemas, stored programs (procedures, functions, triggers, scheduled events), tablespaces, user locks acquired with the GET_LOCK() function (see Section 14.14, “Locking Functions”), and ...