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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-config-values.html
Each row in the table corresponds to the current value of a parameter on a given node. row *************************** Name: NodeId Node: 2 Type: unsigned Default: Minimum: 1 Maximum: 144 Required: Y Current: 2 *************************** 2. row ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-list.html
In MySQL 8.0, all rows relating to employees working at stores in that region can be deleted with the query ALTER TABLE employees TRUNCATE PARTITION pWest, which can be executed much more efficiently than the equivalent DELETE statement DELETE FROM ... List partitioning in MySQL is similar to range partitioning in many ...
https://dev.mysql.com/doc/refman/8.0/en/sys-table-exists.html
Tests whether a given table exists as a regular table, a TEMPORARY table, or a view. If both a temporary and a permanent table exist with the given name, TEMPORARY is returned. Parameters in_db VARCHAR(64): The name of the database in which to ...
https://dev.mysql.com/doc/refman/8.0/en/table.html
TABLE is a DML statement introduced in MySQL 8.0.19 which returns rows and columns of the named table. Given the existence of a table named t, the following two statements produce identical output: TABLE t; SELECT * FROM t; You can order and limit ...See Section 15.2.18, “UNION Clause”, Section 15.2.4, “EXCEPT Clause”, and Section 15.2.8, “INTERSECT Clause”, for more information and ...
https://dev.mysql.com/doc/refman/8.0/en/user-variables.html
HAVING, GROUP BY, and ORDER BY, when referring to a variable that is assigned a value in the select expression list do not work as expected because the expression is evaluated on the client and thus can use stale column values from a previous row.
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-transactions-current-table.html
The table stores one row per thread showing the current status of the thread's most recent monitored transaction event, so there is no system variable for configuring the table size. Other tables that contain transaction event rows are logically ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-metadata-locks-table.html
It is autosized by default; to configure the table size, set the performance_schema_max_metadata_locks system variable at server startup. When a metadata lock is requested and not obtained immediately, a row with a status of PENDING is inserted.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-frequently-asked-questions.html
Transactions are replicated in a format that is used to apply row transformations only, without having to re-execute transactions again (row-based format). Furthermore, given that changes are propagated and applied in row-based format, this means ...
https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html
The following query selects all rows with a date_col value from within the last 30 days: mysql> SELECT something FROM tbl_name -> WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= date_col; The query also selects rows with dates that lie in the future.
https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html
mysql> SELECT EXP(2); -> 7.3890560989307 mysql> SELECT EXP(-2); -> 0.13533528323661 mysql> SELECT EXP(0); -> 1 FLOOR(X) Returns the largest integer value not greater than X. Use of a column with RAND() values in an ORDER BY or GROUP BY clause may ...