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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-size-pl.html
This is a Perl script that can be used to estimate the amount of space that would be required by a MySQL database if it were converted to use the NDBCLUSTER storage engine. Unlike the other utilities discussed in this section, it does not require ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-sql-statements.html
This section discusses several SQL statements that can prove useful in managing and monitoring a MySQL server that is connected to an NDB Cluster, and in some cases provide information about the cluster itself. SHOW ENGINE NDB STATUS, SHOW ENGINE ...
https://dev.mysql.com/doc/refman/5.7/en/innochecksum.html
This tool reads an InnoDB tablespace file, calculates the checksum for each page, compares the calculated checksum to the stored checksum, and reports mismatches, which indicate damaged pages. It was originally developed to speed up verifying the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-tips.html
This section provides information about techniques for more effective use of mysql and about mysql operational behavior. Input-Line Editing Disabling Interactive History Unicode Support on Windows Displaying Query Results Vertically Using ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-buffer-pool-stats-table.html
The INNODB_BUFFER_POOL_STATS table provides much of the same buffer pool information provided in SHOW ENGINE INNODB STATUS output. Much of the same information may also be obtained using InnoDB buffer pool server status variables. The idea of ...
https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
It may be used to time how quickly MySQL processes the expression. The result value is 0, or NULL for inappropriate arguments such as a NULL or negative repeat count. The intended use is from within the mysql client, which reports query execution ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-diskio.html
If you follow best practices for database design and tuning techniques for SQL operations, but your database is still slow due to heavy disk I/O activity, consider these disk I/O optimizations. If the Unix top tool or the Windows Task Manager shows ...
https://dev.mysql.com/doc/refman/5.7/en/mathematical-functions.html
ABS(X) Returns the absolute value of X, or NULL if X is NULL. An implication of this is that ABS(-9223372036854775808) produces an error because the result cannot be stored in a signed BIGINT value. mysql> SELECT ABS(2); -> 2 mysql> SELECT ABS(-32); ...