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https://dev.mysql.com/doc/refman/8.4/en/partitioning-management.html
Note All partitions of a partitioned table must have the same number of subpartitions; it is not possible to change the subpartitioning once the table has been created. To change a table's partitioning scheme, it is necessary only to use the ALTER ... There are a number of ways using SQL statements to modify partitioned tables; it is possible to add, drop, redefine, merge, or split existing partitions using the partitioning extensions to the ALTER TABLE ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-pruning.html
In the second case, the optimizer evaluates the partitioning expression for each value in the list, creates a list of matching partitions, and then scans only the partitions in this partition list. The optimization known as partition pruning is ...
https://dev.mysql.com/doc/refman/8.4/en/precision-math-examples.html
Consider these statements: mysql> CREATE TABLE t (i INT, d DECIMAL, f FLOAT); mysql> INSERT INTO t VALUES(1,1,1); mysql> CREATE TABLE y SELECT AVG(i), AVG(d), AVG(f) FROM t; The result is a double only for the floating-point argument. This section ...
https://dev.mysql.com/doc/refman/8.4/en/replication-solutions-diffengines.html
Configuring different engines on the source and replica depends on how you set up the initial replication process: If you used mysqldump to create the database snapshot on your source, you could edit the dump file text to change the engine type used ... It does not matter for the replication process whether the original table on the source and the replicated table on the replica use different storage engine ...
https://dev.mysql.com/doc/refman/8.4/en/silent-column-changes.html
In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE statement. Trailing spaces are automatically deleted from ENUM and SET member values when the table is created. Specifying the CHARACTER ...These might be changes to a data type, to attributes associated with a data type, or to an index ...
https://dev.mysql.com/doc/refman/8.4/en/truncate-table.html
Logically, TRUNCATE TABLE is similar to a DELETE statement that deletes all rows, or a sequence of DROP TABLE and CREATE TABLE statements. It differs from DELETE in the following ways: Truncate operations drop and re-create the table, which is much ...To achieve high performance, TRUNCATE TABLE bypasses the DML method of deleting ...
https://dev.mysql.com/doc/refman/8.4/en/version-tokens-installation.html
To avoid this overhead, do not install it unless you plan to use it. This section describes how to install or uninstall Version Tokens, which is implemented in a plugin library file containing a plugin and loadable functions. For general information ...
https://dev.mysql.com/doc/refman/8.4/en/view-updatability.html
For information about generated columns, see Section 15.1.20.8, “CREATE TABLE and Generated Columns”. They must not be expressions, such as these: 3.14159 col1 + 3 UPPER(col2) col3 / col4 (subquery) MySQL sets a flag, called the view ... Some ...
https://dev.mysql.com/doc/connectors/en/connector-net-connections-pooling.html
See Section 4.4.1, “Creating a Connector/NET Connection String” for further information. Subsequently, if a new MySqlConnection object is opened, it is created from the connection pool, rather than creating a new native connection. Do not create ... The MySQL Connector/NET supports connection pooling for better performance and scalability with database-intensive ...
https://dev.mysql.com/doc/connectors/en/connector-odbc-examples-programming-net.html
5.6.7.2.1 Using Connector/ODBC with ODBC.NET and C# (C sharp) The following sample creates a table my_odbc_net and demonstrates its use in C#. This section contains simple examples that demonstrate the use of Connector/ODBC drivers with ODBC.NET.