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https://dev.mysql.com/doc/refman/5.7/en/sys-statement-performance-analyzer.html
overall: Generate an analysis based on the content of the table specified by in_table. Creates a report of the statements running on the server. The views are calculated based on the overall and/or delta activity. This procedure disables binary ...
https://dev.mysql.com/doc/refman/5.7/en/tuning-trace-purging.html
Thus, if a statement contains substatements (such as invoking stored procedures, stored functions, or triggers), the topmost statement and substatements each generate one trace, but at the end of execution, the trace for only the last substatement ...A user who wants to see the trace of a different substatement can enable or disable tracing for the desired substatement, but this requires editing the routine code, which may not always be ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-command-options.html
This option is on by default, which enables database, table, and column name completion. (This applies to statements terminated by ; or \G.) --batch, -B Command-Line Format --batch Print results using tab as the column separator, with each row on a ... mysql supports the following options, which can be specified on the command line or in the [mysql] and [client] groups of an option ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
TIMESTAMP and DATETIME columns can be automatically initializated and updated to the current date and time (that is, the current timestamp). For any TIMESTAMP or DATETIME column in a table, you can assign the current timestamp as the default value, ...Any of the synonyms for CURRENT_TIMESTAMP have the same meaning as ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-compression-internals.html
Each row in the index node contains the values of the (user-specified or system-generated) primary key and all the other columns of the table. The pointer is in fact the value of the primary key of the table, which is used to access the clustered ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-what-is-new-7-5.html
The config_params table has been made read-only, and has been enhanced with additional columns providing information about each configuration parameter, including the parameter's type, default value, maximum and minimum values (where applicable), a ... Major changes and new features in NDB Cluster 7.5 which are likely to be of interest are shown in the following list: ndbinfo ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-internals.html
Table 14.22 cache_policies Columns Column Description policy_name Name of the cache policy. Table 14.23 config_options Columns Column Description Name Name of the memcached-related configuration option. The following configuration options are ...
https://dev.mysql.com/doc/refman/5.7/en/converting-tables-to-innodb.html
autocommit=1 is suitable for InnoDB tables when running a sequence of queries for generating reports or analyzing statistics. File-per-table tablespaces also support the Barracuda file format and associated features such as table compression, ... If ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-memory-per-fragment.html
Every row having one or more variable-sized, one or more dynamic columns (or both) has a variable-sized part. Each row in an NDB table has a fixed-size part, consisting of a row header, and one or more fixed-size columns. The total free space ...
https://dev.mysql.com/doc/refman/5.7/en/storage-requirements.html
Table data might be compressed, either for a column or an entire row, complicating the calculation of storage requirements for a table or column. This figure excludes BLOB or TEXT columns, which contribute only 9 to 12 bytes toward this size. For ...