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https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-3.html
This had an adverse effect on queries using joins on InnoDB tables. InnoDB: InnoDB did not allow updating a REDUNDANT table column that was altered with NULL as the default value using the INSTANT algorithm. (Bug #36341532) InnoDB: Redesigned the ...
https://dev.mysql.com/doc/refman/8.4/en/internal-locking.html
This section discusses internal locking; that is, locking performed within the MySQL server itself to manage contention for table contents by multiple sessions. Row-Level Locking Table-Level Locking Choosing the Type of Locking Row-Level Locking ...
https://dev.mysql.com/doc/refman/8.4/en/partitioning-columns-range.html
However, the order of the column names in the partitioning column list and the value lists does not have to be the same as the order of the table column definitions in the main part of the CREATE TABLE statement. As with table partitioned by RANGE, ... Range columns partitioning is similar to range partitioning, but enables you to define partitions using ranges based on multiple column ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-auto-increment-handling.html
InnoDB provides a configurable locking mechanism that can significantly improve scalability and performance of SQL statements that add rows to tables with AUTO_INCREMENT columns. To use the AUTO_INCREMENT mechanism with an InnoDB table, an ...The ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-about-auto-parallel-load.html
Auto Parallel Load is a feature of MySQL HeatWave that automates many of the steps for loading data, which include the following: Excluding schemas, tables, and columns that cannot be loaded. Defining RAPID as the secondary engine for tables that ...Requirements and Privileges for Auto Parallel Load To run Auto Parallel Load in normal mode, the MySQL HeatWave Cluster must be ...
https://dev.mysql.com/doc/refman/8.4/en/load-data.html
INTO Statement”.) To write data from a table to a file, use SELECT ... To read the file back into a table, use LOAD DATA. If you use LOAD DATA on an empty MyISAM table, all nonunique indexes are created in a separate batch (as for REPAIR TABLE).
https://dev.mysql.com/doc/refman/8.4/en/example-foreign-keys.html
MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column ...
https://dev.mysql.com/doc/ndbapi/en/ndb-column.html
This section provides information about the Column class, which models a column in an NDBCLUSTER table. Column::getColumnNo() Description This method gets the sequence number of a column within its containing table or index. If the column is part ...The NDB API provides no support for constructing such formats; however, they are checked by the NDB ...
https://dev.mysql.com/doc/refman/8.4/en/switchable-optimizations.html
For more information, see Section 10.2.2.5, “Derived Condition Pushdown Optimization” Derived Table Merging Flags derived_merge (default on) Controls merging of derived tables and views into outer query block. The derived_merge flag controls ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-genai-vector-store-load.html
This section describes how to generate vector embeddings for files or folders stored in Object Storage, and load the embeddings into a vector store table. To set up a new vector store using an object URI, perform the following steps: To create the ...If not already done, create an Oracle Cloud Infrastructure (OCI) bucket for storing files that you want to ingest into the vector ...