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https://dev.mysql.com/doc/refman/8.0/en/json-utility-functions.html
Extraneous whitespaces and newlines present in this value have no effect on the output. When the argument is a JSON column, this is the space used to store the JSON document as it was inserted into the column, prior to any partial updates that may ... This section documents utility functions that act on JSON values, or strings that can be parsed as JSON ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-okv-plugin.html
The configuration directory used by keyring_okv as the location for its support files should have a restrictive mode and be accessible only to the account used to run the MySQL server. Install the okvclient.jar file using the following command (you ... Note The keyring_okv plugin is an extension included in MySQL Enterprise Edition, a commercial ...
https://dev.mysql.com/doc/refman/8.0/en/keywords.html
Reserved words are permitted as identifiers if you quote them as described in Section 11.2, “Schema Object Names”: mysql> CREATE TABLE interval (begin INT, end INT); ERROR 1064 (42000): You have an error in your SQL syntax ... At some point, you ...Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column ...
https://dev.mysql.com/doc/refman/8.0/en/ldml-rules.html
That is, 'k' behaves as if it expands to a character after 'c' followed by 'h': <reset>c</reset> <x><s>k</s><extend>h</extend></x> This syntax permits long sequences. The attribute has these permitted values: simple: Calculate character weights as ...This is a subset of the syntax described in the LDML specification available at http://www.unicode.org/reports/tr35/, which should be consulted for further ...
https://dev.mysql.com/doc/refman/8.0/en/memory-storage-engine.html
MEMORY tables have the following characteristics: Space for MEMORY tables is allocated in small blocks. MEMORY tables also have none of the problems commonly associated with deletes plus inserts in hashed tables. MEMORY tables can have up to 64 ...
https://dev.mysql.com/doc/refman/8.0/en/metadata-locking.html
However, if max_write_lock_count is set to some low value (say, 10), read lock requests may be preferred over pending write lock requests if the read lock requests have already been passed over in favor of 10 write lock requests. Begin with two ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-general-options.html
This is often the case when you have large key values for CHAR, VARCHAR, or TEXT columns, because the sort operation needs to store the complete key values as it proceeds. If you have lots of temporary space and you can force myisamchk to repair by ... The options described in this section can be used for any type of table maintenance operation performed by ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-using-management-client.html
The Backup backup_id started from node management_node_id has been aborted messages mean that the backup has been terminated and that all files relating to this backup have been removed from the cluster file system. Before starting a backup, make ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-config-starting.html
Each such section defines a connection # “slot”; you should have at least as many of these sections in the # config.ini file as the total number of API nodes and SQL nodes that # you wish to have connected to the cluster at any given time.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-install-configuration.html
Important Once you have started a mysqld process with the ndbcluster and ndb-connectstring parameters in the [mysqld] and [mysql_cluster] sections of the my.cnf file as shown previously, you cannot execute any CREATE TABLE or ALTER TABLE statements ... In this section, we discuss manual configuration of an installed NDB Cluster by creating and editing configuration ...