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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-cpustat.html
The cpustat table provides per-thread CPU statistics gathered each second, for each thread running in the NDB kernel.
https://dev.mysql.com/doc/refman/5.7/en/savepoint.html
In this case, the row lock is released in the undo.) Savepoints that were set at a later time than the named savepoint are deleted. If the ROLLBACK TO SAVEPOINT statement returns the following error, it means that no savepoint with the specified ...
https://dev.mysql.com/doc/refman/5.7/en/correlated-subqueries.html
A correlated subquery is a subquery that contains a reference to a table that also appears in the outer query. For example: SELECT * FROM t1 WHERE column1 = ANY (SELECT column1 FROM t2 WHERE t2.column2 = t1.column2); Notice that the subquery ...
https://dev.mysql.com/doc/refman/5.7/en/show-binlog-events.html
Note Issuing a SHOW BINLOG EVENTS with no LIMIT clause could start a very time- and resource-consuming process because the server returns to the client the complete contents of the binary log (which includes all statements executed by the server ...
https://dev.mysql.com/doc/refman/5.7/en/numeric-functions.html
Table 12.8 Numeric Functions and Operators Name Description %, MOD Modulo operator * Multiplication operator + Addition operator - Minus operator - Change the sign of the argument / Division operator ABS() Return the absolute value ACOS() Return ...
https://dev.mysql.com/doc/refman/5.7/en/sys-diagnostics.html
Parameters in_max_runtime INT UNSIGNED: The maximum data collection time in seconds. in_interval INT UNSIGNED: The sleep time between data collections in seconds. This procedure disables binary logging during its execution by manipulating the ...
https://dev.mysql.com/doc/refman/5.7/en/csv-storage-engine.html
If you examine the test.CSV file in the database directory created by executing the preceding statements, its contents should look like this: "1","record one" "2","record two" This format can be read, and even written, by spreadsheet applications ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-table-reference.html
The following table summarizes all available INFORMATION_SCHEMA tables. For greater detail, see the individual table descriptions. Table 24.1 INFORMATION_SCHEMA Tables Table Name Description Introduced Deprecated CHARACTER_SETS Available character ...
https://dev.mysql.com/doc/refman/5.7/en/view-restrictions.html
The maximum number of tables that can be referenced in the definition of a view is 61. Aliases for column names in CREATE VIEW statements are checked against the maximum column length of 64 characters (not the maximum alias length of 256 ...View ...
https://dev.mysql.com/doc/refman/5.7/en/charset-unicode-utf16.html
Because MySQL must allow for the worst case (that one character requires four bytes) the maximum length of a utf16 column or index is only half of the maximum length for a ucs2 column or index. The utf16 character set is the ucs2 character set with ...