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https://dev.mysql.com/doc/refman/8.0/en/error-creating-innodb.html
The troubleshooting steps for InnoDB I/O problems depend on when the problem occurs: during startup of the MySQL server, or during normal operations when a DML or DDL statement fails due to problems at the file system level. Initialization Problems ...Make sure the disk is not full and you are not exceeding any disk ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-priority-based-filtering.html
In the MySQL error log, system messages are labeled as “System”. In addition, each error code specified must actually be used by MySQL. Attempts to specify a code not within a permitted range or within a permitted range but not used by MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/error-message-language.html
By default, mysqld produces error messages in English, but they can be displayed instead in any of several other languages: Czech, Danish, Dutch, Estonian, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Norwegian-ny, ...
https://dev.mysql.com/doc/refman/8.0/en/example-auto-increment.html
You can retrieve the most recent automatically generated AUTO_INCREMENT value with the LAST_INSERT_ID() SQL function or the mysql_insert_id() C API function. Note For a multiple-row insert, LAST_INSERT_ID() and mysql_insert_id() actually return the ...You can also explicitly assign 0 to the column to generate sequence numbers, unless the NO_AUTO_VALUE_ON_ZERO SQL mode is ...
https://dev.mysql.com/doc/refman/8.0/en/extended-show.html
Some extensions to SHOW statements accompany the implementation of INFORMATION_SCHEMA: SHOW can be used to get information about the structure of INFORMATION_SCHEMA itself. Several SHOW statements accept a WHERE clause that provides more ...
https://dev.mysql.com/doc/refman/8.0/en/federated-storage-engine.html
The FEDERATED storage engine lets you access data from a remote MySQL database without using replication or cluster technology. To include the FEDERATED storage engine if you build MySQL from source, invoke CMake with the ...Querying a local ...
https://dev.mysql.com/doc/refman/8.0/en/general-security-issues.html
This section describes general security issues to be aware of and what you can do to make your MySQL installation more secure against attack or misuse. For information specifically about the access control system that MySQL uses for setting up user ...
https://dev.mysql.com/doc/refman/8.0/en/getting-information.html
What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and ...
https://dev.mysql.com/doc/refman/8.0/en/gis-geometrycollection-property-functions.html
mysql> SET @gc = 'GeometryCollection(Point(1 1),LineString(2 2, 3 3))'; mysql> SELECT ST_AsText(ST_GeometryN(ST_GeomFromText(@gc),1)); +-------------------------------------------------+ | ST_AsText(ST_GeometryN(ST_GeomFromText(@gc),1)) | ...Unless ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-compatibility-upgrade.html
The primary cannot remain as the primary unless it is running the lowest MySQL Server version in the group. From MySQL 8.0.17, this applies to upgrades between patch versions, and for lower releases, this only applies to upgrades between major ...