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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/data-directory.html
Information managed by the MySQL server is stored under a directory known as the data directory. The following list briefly describes the items typically found in the data directory, with cross references for additional information: Data directory ...The performance_schema directory corresponds to the Performance Schema, which provides information used to inspect the internal execution of the server at ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndbxfrm.html
The .Data, .ctl, and .log files comprising the backup must be encrypted separately, and these files must be encrypted separately for each data node. An encrypted file can be re-encrypted with a new password using the --encrypt-password and ... The ...--decrypt-password-from-stdin[=TRUE|FALSE] Command-Line Format --decrypt-password-from-stdin Decrypts a file encrypted by NDB, using a password supplied from standard ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-enterprise-data-masking.html
MySQL Enterprise Edition 5.7 and higher includes MySQL Enterprise Data Masking and De-Identification, implemented as a plugin library containing a plugin and several loadable functions. Data masking hides sensitive information by replacing real ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
NDB Cluster 8.0.14, uses the MySQL data dictionary to make sure that disk data files and related constructs such as tablespaces and log file groups are correctly distributed between all connected SQL nodes. Previously, the only NDB objects ...NDB ...
https://dev.mysql.com/doc/refman/8.0/en/data-types.html
MySQL supports SQL data types in several categories: numeric types, date and time types, string (character and byte) types, spatial types, and the JSON data type. This chapter provides an overview and more detailed description of the properties of ...For floating-point and fixed-point types, M is the total number of digits that can be stored (the ...
https://dev.mysql.com/doc/refman/8.0/en/data-change-optimization.html
Data analysis and reporting applications typically run data change operations that affect many rows at once, where the main considerations is the I/O to write large amounts of data and keep indexes up-to-date. For inserting and updating large ...
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/problems.html
This section lists some common problems and error messages that you may encounter. It describes how to determine the causes of the problems and what to do to solve them.
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”.