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https://dev.mysql.com/doc/refman/8.0/en/load-data.html
The file can be read from the server host or the client host, depending on whether the LOCAL modifier is given. INTO Statement”.) To write data from a table to a file, use SELECT ... To read the file back into a table, use LOAD DATA. The syntax of ...
https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html
mysql> SELECT COT(12); -> -1.5726734063977 mysql> SELECT COT(0); -> out-of-range error CRC32(expr) Computes a cyclic redundancy check value and returns a 32-bit unsigned value. ABS(X) Returns the absolute value of X, or NULL if X is NULL. An ...
https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html
Note To store values generated by INET_ATON(), use an INT UNSIGNED column rather than INT, which is signed. UUID_SHORT() Returns a “short” universal identifier as a 64-bit unsigned integer. The function return value and type are the same as the ...
https://dev.mysql.com/doc/refman/8.0/en/myisampack.html
When the table is used later, the server reads into memory the information needed to decompress columns. This results in much better performance when accessing individual rows, because you only have to uncompress exactly one row. MySQL uses mmap() ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-api-definition.html
Id Version (or later) NDB 8.0.13 Type or units unsigned Default [...] Range 1 - 255 Restart Type Initial System Restart: Requires a complete shutdown of the cluster, wiping and restoring the cluster file system from a backup, and then restarting the ... The [mysqld] and [api] sections in the config.ini file define the behavior of the MySQL servers (SQL nodes) and other applications (API nodes) used to access cluster ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-online-add-node-example.html
In this section we provide a detailed example illustrating how to add new NDB Cluster data nodes online, starting with an NDB Cluster having 2 data nodes in a single node group and concluding with a cluster having 4 data nodes in 2 node groups.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-index-stat.html
--query=# Command-Line Format --query=# Type Numeric Default Value 0 Minimum Value 0 Maximum Value MAX_INT Perform random range queries on first key attribute (must be int unsigned). ndb_index_stat provides per-fragment statistical information ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-system-definition.html
More information about these parameters can be found in the following list: ConfigGenerationNumber Version (or later) NDB 8.0.13 Type or units unsigned Default 0 Range 0 - 4294967039 (0xFFFFFEFF) Restart Type Node Restart: Requires a rolling restart ... The [system] section is used for parameters applying to the cluster as a ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-bulk-data-loading.html
For optimal performance when loading data into an InnoDB FULLTEXT index, follow this set of steps: Define a column FTS_DOC_ID at table creation time, of type BIGINT UNSIGNED NOT NULL, with a unique index named FTS_DOC_ID_INDEX. For example: CREATE ... These performance tips supplement the general guidelines for fast inserts in Section 10.2.5.1, “Optimizing INSERT ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-limitations.html
This section discusses current restrictions and limitations on MySQL partitioning support. The following constructs are not permitted in partitioning expressions: Stored procedures, stored functions, loadable functions, or plugins. For a list of ...