https://dev.mysql.com/innodb-memcached-porting-mysql.html
If there is a short numeric primary key column in an InnoDB table, use it as the unique lookup key for memcached by converting the integer to a string value. Note The daemon_memcached plugin supports inserts and reads on mapped InnoDB tables that ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cluster-operations.html
The cluster_operations table provides a per-operation (stateful primary key op) view of all activity in the NDB Cluster from the point of view of the local data management (LQH) blocks (see The DBLQH Block). The following table provides information ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cpustat-1sec.html
The cpustat-1sec table provides raw, per-thread CPU data obtained each second for each thread running in the NDB kernel. Like cpustat_50ms and cpustat_20sec, this table shows 20 measurement sets per thread, each referencing a period of the named ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cpustat-20sec.html
The cpustat_20sec table provides raw, per-thread CPU data obtained each 20 seconds, for each thread running in the NDB kernel. Like cpustat_50ms and cpustat_1sec, this table shows 20 measurement sets per thread, each referencing a period of the ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cpustat-50ms.html
The cpustat_50ms table provides raw, per-thread CPU data obtained each 50 milliseconds for each thread running in the NDB kernel. Like cpustat_1sec and cpustat_20sec, this table shows 20 measurement sets per thread, each referencing a period of the ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cpustat.html
The cpustat table provides per-thread CPU statistics gathered each second, for each thread running in the NDB kernel. The following table provides information about the columns in the cpustat table. For each column, the table shows the name, data ...
https://dev.mysql.com/mysql-cluster-ndbinfo-server-locks.html
The server_locks table is similar in structure to the cluster_locks table, and provides a subset of the information found in the latter table, but which is specific to the SQL node (MySQL server) where it resides. (The cluster_locks table provides ...
https://dev.mysql.com/numeric-type-attributes.html
MySQL supports an extension for optionally specifying the display width of integer data types in parentheses following the base keyword for the type. This optional display width may be used by applications to display integer values having a width ...For example, INT(4) specifies an INT with a display width of four ...
https://dev.mysql.com/type-conversion.html
For example, if a subquery returns an integer to be compared to a DATETIME value, the comparison is done as two integers. The arguments are compared as decimal values if the other argument is a decimal or integer value, or as floating-point values ... When an operator is used with operands of different types, type conversion occurs to make the operands ...
https://dev.mysql.com/data-masking-reference.html
margin1: A nonnegative integer that specifies the number of characters on the left end of the string to remain unmasked. margin2: A nonnegative integer that specifies the number of characters on the right end of the string to remain unmasked. The ...
