https://dev.mysql.com/keyring-udfs-plugin-specific.html
Return value: Returns 1 for success, or NULL and an error for failure. Return value: Returns 1 for success, or NULL and an error for failure. For each keyring plugin-specific user-defined function (UDF), this section describes its purpose, calling ...
https://dev.mysql.com/load-data-local-security.html
Interpretation of the MYSQL_OPT_LOAD_DATA_LOCAL_DIR value is as follows: If the value is the null pointer (the default), it names no directory, with the result that no files are permitted for LOCAL data loading. mysql uses the option value to set ...
https://dev.mysql.com/locking-service.html
Namespace and lock names must be non-NULL, nonempty, and have a maximum length of 64 characters. A namespace or lock name specified as NULL, the empty string, or a string longer than 64 characters results in an ER_LOCKING_SERVICE_WRONG_NAME error.
https://dev.mysql.com/multiple-tables.html
The pet table keeps track of which pets you have. If you want to record other information about them, such as events in their lives like visits to the vet or when litters are born, you need another table. What should this table look like? It needs ...
https://dev.mysql.com/mutex-instances-table.html
LOCKED_BY_THREAD_ID When a thread currently has a mutex locked, LOCKED_BY_THREAD_ID is the THREAD_ID of the locking thread, otherwise it is NULL. When a thread unlocks a mutex, mutex_instances shows that the mutex now has no owner (the THREAD_ID ...
https://dev.mysql.com/myisam-ftdump.html
Example: Suppose that the test database contains a table named mytexttable that has the following definition: CREATE TABLE mytexttable ( id INT NOT NULL, txt TEXT NOT NULL, PRIMARY KEY (id), FULLTEXT (txt) ) ENGINE=MyISAM; The index on id is index 0 ...It reads the MyISAM index file directly, so it must be run on the server host where the table is ...
https://dev.mysql.com/mysql-cluster-limitations-syntax.html
Using nullable columns in unique keys and primary keys means that queries using these columns are handled as full table scans. To work around this issue, make the column NOT NULL, or re-create the index without the USING HASH option. Some SQL ...
https://dev.mysql.com/mysql-cluster-programs-ndb-blob-tool.html
This tool can be used to check for and remove orphaned BLOB column parts from NDB tables, as well as to generate a file listing any orphaned parts. It is sometimes useful in diagnosing and repairing corrupted or damaged NDB tables containing BLOB ...
https://dev.mysql.com/mysql-cluster-programs-ndb-size-pl.html
This is a Perl script that can be used to estimate the amount of space that would be required by a MySQL database if it were converted to use the NDBCLUSTER storage engine. Unlike the other utilities discussed in this section, it does not require ...
https://dev.mysql.com/mysql-cluster-programs-ndb-top.html
--passwd[=password], -p Property Value Command-Line Format --passwd[=password] Type Boolean Default Value NULL Connect using this password. (Bug #26907833) --password[=password], -p Property Value Command-Line Format --password[=password] Type ...
