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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-disk-data.html
Disk data objects are subject to the following maximums and minimums: Maximum number of tablespaces: 232 (4294967296) Maximum number of data files per tablespace: 216 (65536) The minimum and maximum possible sizes of extents for tablespace data ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-redo-log-reader.html
Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both. ndb_redo_log_reader is intended for use primarily by NDB Cluster developers and Support personnel in debugging and diagnosing problems. The ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-limitations-partitioning-keys-unique-keys.html
The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part of every unique key that the table may have. For the same reason, you cannot later add a unique ...
https://dev.mysql.com/doc/refman/5.7/en/pattern-matching.html
MySQL provides standard SQL pattern matching as well as a form of pattern matching based on extended regular expressions similar to those used by Unix utilities such as vi, grep, and sed. When you test for a match for this type of pattern, use the ...SQL pattern matching enables you to use _ to match any single character and % to match an arbitrary number of characters (including zero ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-performance-timers-table.html
Note As of MySQL 5.7.21, the Performance Schema setup_timers table is deprecated and is removed in MySQL 8.0, as is the TICKS row in the performance_timers table. The performance_timers table has these columns: TIMER_NAME The name by which to refer ...The rows that do not contain NULL indicate which timers you can use in ...
https://dev.mysql.com/doc/refman/5.7/en/replication-mode-change-online-verify-transactions.html
There are several possible ways to wait for transactions to replicate: The simplest method, which works regardless of your topology but relies on timing is as follows: if you are sure that the replica never lags more than N seconds, just wait for a ... This section explains how to monitor a replication topology and verify that all anonymous transactions have been ...
https://dev.mysql.com/doc/refman/5.7/en/static-format.html
Of the three MyISAM storage formats, static format is the simplest and most secure (least subject to corruption). It is also the fastest of the on-disk formats due to the ease with which rows in the data file can be found on disk: To look up a row ...It is used when the table contains no variable-length columns (VARCHAR, VARBINARY, BLOB, or ...
https://dev.mysql.com/doc/refman/5.7/en/time.html
MySQL retrieves and displays TIME values in 'hh:mm:ss' format (or 'hhh:mm:ss' format for large hours values). MySQL recognizes TIME values in several formats, some of which can include a trailing fractional seconds part in up to microseconds (6 ...
https://dev.mysql.com/doc/refman/5.7/en/uninstall-plugin.html
It requires the DELETE privilege for the mysql.plugin system table because it removes the row from that table that registers the plugin. The server executes the plugin's deinitialization function and removes the row for the plugin from the ...
https://dev.mysql.com/doc/refman/5.7/en/channels-naming-conventions.html
Because channel names are used in replication metadata repositories, the character set used for these is always UTF-8. Although you are generally free to use any name for channels, the following names are reserved: group_replication_applier ... This ...