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https://dev.mysql.com/doc/refman/5.7/en/working-with-null.html
This special treatment of NULL is why, in the previous section, it was necessary to determine which animals are no longer alive using death IS NOT NULL instead of death <> NULL. A common error when working with NULL is to assume that it is not ...
https://dev.mysql.com/doc/refman/5.7/en/faqs-mysql-cluster.html
See MySQL Cluster Manager 1.4.8 User Manual, for more information about this tool. When I run the SHOW command in the NDB Cluster management client, I see a line of output that looks like this: A.10.8. The loading process terminates prematurely and ... In the following section, we answer questions that are frequently asked about NDB Cluster and the NDB storage ...
https://dev.mysql.com/doc/refman/5.7/en/xml-functions.html
Some basic information about XPath syntax and usage is provided later in this section; however, an in-depth discussion of these topics is beyond the scope of this manual, and you should refer to the XML Path Language (XPath) 1.0 standard for ...Note ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-deadlock-detection.html
If the LATEST DETECTED DEADLOCK section of InnoDB Monitor output includes a message stating, “TOO DEEP OR LONG SEARCH IN THE LOCK TABLE WAITS-FOR GRAPH, WE WILL ROLL BACK FOLLOWING TRANSACTION,” this indicates that the number of transactions on ... When deadlock detection is enabled (the default), InnoDB automatically detects transaction deadlocks and rolls back a transaction or transactions to break the ...
https://dev.mysql.com/doc/refman/5.7/en/using-spatial-indexes.html
The optimizer investigates whether available spatial indexes can be involved in the search for queries that use a function such as MBRContains() or MBRWithin() in the WHERE clause. | ...The following query finds all objects that are in the given ...
https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization.html
This section describes how to initialize the data directory manually for MySQL installation methods for which data directory initialization is not automatic. For example, you might see an error like this: bin/mysqld: error while loading shared ...
https://dev.mysql.com/doc/refman/5.7/en/debugging-server.html
You should also read the OS-specific section in this manual for problems that may be unique to your environment. This command also provides some useful information even if you have not compiled MySQL for debugging! If the problem is that some tables ... If you are using some functionality that is very new in MySQL, you can try to run mysqld with the --skip-new option (which disables all new, potentially unsafe ...
https://dev.mysql.com/doc/refman/5.7/en/rename-table.html
RENAME TABLE tbl_name TO new_tbl_name [, tbl_name2 TO new_tbl_name2] ... You must have ALTER and DROP privileges for the original table, and CREATE and INSERT privileges for the new table. To execute RENAME TABLE, there must be no active ...
https://dev.mysql.com/doc/refman/5.7/en/audit-log-filtering.html
It is possible to use a different database for this purpose, in which case you should query the database_name.audit_log_filter table instead. audit_log_filter_flush(): Flush manual changes to the filter tables to affect ongoing filtering. To grant ... Note As of MySQL 5.7.13, for audit log filtering to work as described here, the audit log plugin and the accompanying audit tables and functions must be ...
https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
One way this might occur is that there is no account listed in the grant tables for davida. However, this is faster than running the query again without LIMIT, because the result set need not be sent to the client. An example is a Web script that ...