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https://dev.mysql.com/doc/refman/8.0/en/replication-options-replica.html
If you need to put the relay logs in some area other than the data directory because your relay logs tend to be very large and you do not want to decrease max_relay_log_size. The setting for replica_max_allowed_packet must be larger than the ...
https://dev.mysql.com/doc/refman/8.0/en/internal-temporary-tables.html
When using internal_tmp_disk_storage_engine=INNODB, queries that generate on-disk internal temporary tables that exceed InnoDB row or column limits return Row size too large or Too many columns errors. For such tables, only the max_heap_table_size ...When using the MEMORY storage engine for in-memory temporary tables (internal_tmp_mem_storage_engine=MEMORY), MySQL automatically converts an in-memory temporary table to an on-disk table if it becomes too ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-nutshell.html
As of MySQL 8.0.12, undo logging is supported for small updates to large object (LOB) data, which improves performance of LOB updates that are 100 bytes in size or less. The AUTOEXTEND_SIZE option, introduced in MySQL 8.0.23, defines the amount by ...MySQL now enables administrators to configure user accounts such that too many consecutive login failures due to incorrect passwords cause temporary account ...
https://dev.mysql.com/doc/refman/8.0/en/memory-use.html
If an internal in-memory temporary table becomes too large (as determined using the tmp_table_size and max_heap_table_size system variables), MySQL automatically converts the table from in-memory to on-disk format. For MEMORY tables explicitly ...A ...For efficiency of high-volume read operations, the buffer pool is divided into pages that can potentially hold multiple ...
https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html
As a result, the address value for rows within each name group is nondeterministic. GROUPING(expr [, expr] ...) For GROUP BY queries that include a WITH ROLLUP modifier, the ROLLUP operation produces super-aggregate output rows where NULL represents ...The function return value and type are the same as the return value and type of its argument, but the function result is not checked for the ONLY_FULL_GROUP_BY SQL ...
https://dev.mysql.com/doc/refman/8.0/en/password-too-long.html
This occurs when the library provided by the system to read passwords limits password values to a small number of characters (typically eight). That is a problem with the system library, not with MySQL. To work around it, change your MySQL password ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-compression-internals.html
If you create a table when innodb_strict_mode is OFF, and a subsequent INSERT or UPDATE statement attempts to create an index entry that does not fit in the size of the compressed page, the operation fails with ERROR 42000: Row size too large. If ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-memory-per-fragment.html
Each variable-sized page is reorganized as needed to fit the changing size of variable-sized row parts as they are inserted, updated, and deleted; if a given row part grows too large for the page it is in, it can be moved to a different page. These ...This is true as long as all data nodes are running and connected to the cluster; for a data node that is missing, there are no rows for the fragment replicas that it ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-tablespace-autoextend-size.html
Configuring a larger extension size can help avoid fragmentation and facilitate ingestion of large amounts of data. By default, when a file-per-table or general tablespace requires additional space, the tablespace is extended incrementally ...
https://dev.mysql.com/doc/refman/8.0/en/load-data.html
Some cases are not supported by LOAD DATA: Fixed-size rows (FIELDS TERMINATED BY and FIELDS ENCLOSED BY both empty) and BLOB or TEXT columns. With IGNORE, new rows that duplicate an existing row on a unique key value are discarded. Suppose that you ...The file can be read from the server host or the client host, depending on whether the LOCAL modifier is ...