Search Results
https://dev.mysql.com/doc/heatwave-aws/en/heatwave-aws-events.html
Events 16 Events Statuses of actions and operations on MySQL HeatWave on AWS resources are reported as Events. A list of all Events is found on the Service Events pane, accessible from the console's Home page by the following means: The Monitoring ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-page-compression.html
Page compression is enabled by specifying the COMPRESSION attribute with CREATE TABLE or ALTER TABLE. For page compression to work on Windows, the file system must be created with a cluster size smaller than 4K, and the innodb_page_size must be at ... InnoDB supports page-level compression for tables that reside in file-per-table ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-tablespace-autoextend-size.html
When a file-per-table or general tablespace is created with a non-zero AUTOEXTEND_SIZE setting, the tablespace is initialized at the specified AUTOEXTEND_SIZE size. For tables created in file-per-table tablespaces, SHOW CREATE TABLE shows the ... By ...
https://dev.mysql.com/doc/refman/8.4/en/join.html
MySQL supports the following JOIN syntax for the table_references part of SELECT statements and multiple-table DELETE and UPDATE statements: table_references: escaped_table_reference [, escaped_table_reference] ... index_hint: { USE {INDEX|KEY} ...
https://dev.mysql.com/doc/refman/8.4/en/mysqldump-sql-format.html
This section describes how to use mysqldump to create SQL-format dump files. With --all-databases or --databases, mysqldump writes CREATE DATABASE and USE statements prior to the dump output for each database. This ensures that when the dump file ...For information about reloading such dump files, see Section 9.4.2, “Reloading SQL-Format ...
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 ...