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https://dev.mysql.com/doc/refman/8.0/en/perror.html
perror displays the error message for MySQL or operating system error codes. For example, for the ER_WRONG_VALUE_FOR_VAR error, perror understands any of these arguments: 1231, 001231, MY-1231, or MY-001231, or ER_WRONG_VALUE_FOR_VAR. The meaning ...A given error code may mean different things on different operating ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-error-messages.html
The error_messages table provides information about The error_messages table contains the following columns: error_code Numeric error code error_description Description of error error_status Error status code error_classification Error ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-check.html
What it cannot find is corruption that involves only the data file (which is very unusual). To check a MyISAM table, use the following commands: myisamchk tbl_name This finds 99.99% of all errors. It first checks all index entries for errors and ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-errors-or-warnings.html
These views display normalized statements that have produced errors or warnings. The statements_with_errors_or_warnings and x$statements_with_errors_or_warnings views have these columns: query The normalized statement string. db The default ...By ...
https://dev.mysql.com/doc/refman/8.0/en/error-access-denied.html
Often the problem is related to the MySQL accounts that the server permits client programs to use when connecting. See Section 8.2, “Access Control and Account Management”, and Section 8.2.22, “Troubleshooting Problems Connecting to MySQL”.
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-porting-mysql.html
Rather than a single InnoDB table column to hold a composite data value, data is divided among three table columns (population, area_sq_km, and drive_side). The sample Python application inserts data into the multicol table and retrieves data for ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-replicaset-introduction.html
An InnoDB ReplicaSet consists of at least two MySQL Server instances, and it provides all of the MySQL Replication features you are familiar with, such as read scale-out and data security. InnoDB ReplicaSet uses the following MySQL technologies: ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-introduction.html
Key Advantages of InnoDB Its DML operations follow the ACID model, with transactions featuring commit, rollback, and crash-recovery capabilities to protect user data. Each InnoDB table has a primary key index called the clustered index that ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-cluster-introduction.html
InnoDB Cluster uses the following MySQL technologies: MySQL Shell, which is an advanced client and code editor for MySQL. The following diagram shows an overview of how these technologies work together: Figure 23.1 InnoDB Cluster overview Being ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-benefits.html
InnoDB tables have the following benefits: If the server unexpectedly exits because of a hardware or software issue, regardless of what was happening in the database at the time, you don't need to do anything special after restarting the database.