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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-import.html
db_name is the name of the database where the table into which to import the data is found; file_name is the name of the CSV file from which to read the data; this must include the path to this file if it is not in the current directory. The name of ... ndb_import imports CSV-formatted data, such as that produced by mysqldump --tab, directly into NDB using the NDB ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-index-stat.html
ndb_index_stat provides per-fragment statistical information about indexes on NDB tables. sampleCount can be compared with the cardinality of SHOW INDEX or INFORMATION_SCHEMA.STATISTICS, although the latter two provide a view of the table as a ...
https://dev.mysql.com/doc/refman/8.4/en/replication-features-transactions.html
In general, you should avoid transactions that update both transactional and nontransactional tables in a replication environment. You should also avoid using any statement that accesses both transactional (or temporary) and nontransactional tables ...The server uses these rules for binary logging: If the initial statements in a transaction are nontransactional, they are written to the binary log ...
https://dev.mysql.com/doc/refman/8.4/en/data-dictionary-information-schema.html
In particular, for each INFORMATION_SCHEMA table that is a view on data dictionary tables: The server no longer must create a temporary table for each query of the INFORMATION_SCHEMA table. When the underlying data dictionary tables store values ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-locking.html
Intention Locks InnoDB supports multiple granularity locking which permits coexistence of row locks and table locks. WRITE takes an exclusive lock (an X lock) on the specified table. Intention locks are table-level locks that indicate which type of ...Shared and Exclusive Locks Intention Locks Record Locks Gap Locks Next-Key Locks Insert Intention Locks AUTO-INC Locks Predicate Locks for Spatial Indexes Shared and Exclusive Locks InnoDB implements standard row-level locking where there are two types of locks, shared (S) locks and exclusive (X) ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-info.html
Methods of obtaining such information include the following: Using the SHOW CREATE TABLE statement to view the partitioning clauses used in creating a partitioned table. Using the SHOW TABLE STATUS statement to determine whether a table is ... This ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-management.html
There are a number of ways using SQL statements to modify partitioned tables; it is possible to add, drop, redefine, merge, or split existing partitions using the partitioning extensions to the ALTER TABLE statement. There are also ways to obtain ...For a discussion of managing HASH and KEY partitions, see Section 26.3.2, “Management of HASH and KEY ...
https://dev.mysql.com/doc/refman/8.4/en/replica-logs-status.html
The connection metadata repository is written to the slave_master_info table in the mysql system schema, and the applier metadata repository is written to the slave_relay_log_info table in the mysql system schema. A warning message is issued if ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/backup-capacity-options.html
--sleep=MS Command-Line Format --sleep=MS Type Numeric Default Value 0 Unit millisecond Specify the number in milliseconds to sleep after copying a certain amount of data from InnoDB tables. --skip-unused-pages Skip unused pages in tablespaces when ... These options limit the resources used by the backup process, in order to minimize backup overhead for busy or huge databases, or specify behaviors of the process when encountering resource ...
https://dev.mysql.com/doc/refman/8.4/en/data-type-defaults.html
Examples: CREATE TABLE t1 ( i INT DEFAULT -1, c VARCHAR(10) DEFAULT '', price DOUBLE(16,2) DEFAULT 0.00 ); SERIAL DEFAULT VALUE is a special case. An expression default value for one column can refer to other table columns, with the exception that ... Data type specifications can have explicit or implicit default ...