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https://dev.mysql.com/doc/refman/9.7/en/mysqladmin.html
You can use it to check the server's configuration and current status, to create and drop databases, and more. Invoke mysqladmin like this: mysqladmin [options] command [command-arg] [command [command-arg]] ... Some of the commands take an argument ...
https://dev.mysql.com/doc/refman/9.7/en/mysqlbinlog-row-events.html
The following examples illustrate how mysqlbinlog displays row events that specify data modifications. These correspond to events with the WRITE_ROWS_EVENT, UPDATE_ROWS_EVENT, and DELETE_ROWS_EVENT type codes. The --base64-output=DECODE-ROWS and ...
https://dev.mysql.com/doc/refman/9.7/en/mysqlcheck.html
The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes tables. Each table is locked and therefore unavailable to other sessions while it is being processed, although for check operations, the table is locked ...
https://dev.mysql.com/doc/refman/9.7/en/mysqldm-options.html
mysqldm accepts MySQL standard connection options and several mysqldm-specific options. --iterations=numberOfIterations Command-Line Format --iterations=# Type Integer Default Value 10 The number of diagnostic iterations. A temporary directory ...
https://dev.mysql.com/doc/refman/9.7/en/mysqlshow.html
The mysqlshow client can be used to quickly see which databases exist, their tables, or a table's columns or indexes. The same information can be obtained by using those statements directly. For example, you can issue them from the mysql client ...
https://dev.mysql.com/doc/refman/9.7/en/mysqlslap.html
mysqlslap is a diagnostic program designed to emulate client load for a MySQL server and to report the timing of each stage. Invoke mysqlslap like this: mysqlslap [options] Some options such as --create or --query enable you to specify a string ...
https://dev.mysql.com/doc/refman/9.7/en/nonpersistible-system-variables.html
SET PERSIST and SET PERSIST_ONLY enable global system variables to be persisted to the mysqld-auto.cnf option file in the data directory (see Section 15.7.6.1, “SET Syntax for Variable Assignment”). However, not all system variables can be ...
https://dev.mysql.com/doc/refman/9.7/en/null-values.html
The NULL value means “no data.” NULL can be written in any lettercase. Be aware that the NULL value is different from values such as 0 for numeric types or the empty string for string types. For text file import or export operations performed ...
https://dev.mysql.com/doc/refman/9.7/en/numeric-type-syntax.html
For integer data types, M indicates the minimum display width. Display width is unrelated to the range of values a type can store, as described in Section 13.1.6, “Numeric Type Attributes”. For floating-point and fixed-point data types, M is ...
https://dev.mysql.com/doc/refman/9.7/en/optimize-blob.html
When storing a large blob containing textual data, consider compressing it first. Do not use this technique when the entire table is compressed by InnoDB or MyISAM. For a table with several columns, to reduce memory requirements for queries that do ...