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https://dev.mysql.com/doc/refman/8.4/en/nested-join-optimization.html
The syntax of table_factor is extended in comparison with the SQL Standard. The latter accepts only table_reference, not a list of them inside a pair of parentheses. This is a conservative extension if we consider each comma in a list of ...The ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-limitations-storage-engines.html
In MySQL 8.4, partitioning support is not actually provided by the MySQL Server, but rather by a table storage engine's own or native partitioning handler. This means that partitioned tables cannot be created using any other storage engine than ...
https://dev.mysql.com/doc/internals/en/optimizer-partition-pruning.html
With non-transactional tables such as MyISAM, locks are placed on entire partitioned table. Suppose that we have a partitioned table with N columns, using partitioning type p_type and the partitioning function p_func, represented like this: CREATE ...Partitions that did not get into this set (that is, those that were pruned away) will not be accessed at all: this is how query execution is made ...
https://dev.mysql.com/doc/refman/8.4/en/replace.html
| TABLE table_name} value: {expr | DEFAULT} value_list: value [, value] ... REPLACE works exactly like INSERT, except that if an old row in the table has the same value as a new row for a PRIMARY KEY or a UNIQUE index, the old row is deleted before ... REPLACE [LOW_PRIORITY | DELAYED] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] { {VALUES | VALUE} (value_list) [, (value_list)] ...
https://dev.mysql.com/doc/internals/en/optimizer-joins-access-methods.html
Bad join choices can cause more damage than bad choices in single-table searches, so MySQL developers have spent proportionally more time making sure that the tables in a query are joined in an optimal order and that optimal access methods (often ...The goal of the query optimizer is to find an optimal QEP among all such possible ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-recattr-vs-ndbrecord.html
This example illustrates the key differences between the old-style NdbRecAttr API and the newer approach using NdbRecord when performing some common tasks in an NDB API application. The source code can be found can be found in the file ...
https://dev.mysql.com/doc/x-devapi-userguide/en/sql-crud-functions.html
Table.insert() The Table.insert() method works like an INSERT statement in SQL. It is used to store data in a relational table in the database. The example assumes that the test schema exists and is assigned to the variable db, and that an empty ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-auto-unload-syntax.html
This adds an include list to exactly specify the tables to unload, which eliminates the need to include a database and exclude unnecessary tables. mysql> CALL sys.HEATWAVE_UNLOAD_all (options); options: {JSON_OBJECT(keyvalue[, keyvalue]...)|NULL} ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-data-load-prerequisites.html
Prepare Data Before loading data, ensure that you meet the following requirements: The tables you intend to load must be set to ENGINE=InnoDB tables. You can manually convert tables by using the following ALTER TABLE statement: mysql> ALTER TABLE ...
https://dev.mysql.com/doc/heatwave-aws/en/heatwave-aws-loading-unloading-heatwave.html
You can view the following information about schemas and tables: Name: The name of the schema or table. Memory Size Estimate (GiB): An estimate of the memory required on the MySQL HeatWave Cluster for the schema or table. String Column Encoding: The ... Loading or Unloading Data into MySQL HeatWave Cluster 9.1 Loading or Unloading Data into MySQL HeatWave Cluster Use MySQL HeatWave Console to load data into or unload data from a MySQL HeatWave ...