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https://dev.mysql.com/doc/refman/8.4/en/group-by-handling.html
SQL-92 and earlier does not permit queries for which the select list, HAVING condition, or ORDER BY list refer to nonaggregated columns that are not named in the GROUP BY clause. SQL:1999 and later permits such nonaggregates per optional feature ...
https://dev.mysql.com/doc/relnotes/mysql-cluster/8.4/en/news-8-4-1.html
It was removed due to a critical issue that could stop the server from restarting following the creation of a very large number of tables (8001 or more). ndbinfo Information Database: Added a type column to the transporter_details table in the ...
https://dev.mysql.com/doc/refman/8.4/en/structured-system-variables.html
(You could also have written --default.key_buffer_size=256K.) In addition, the server creates a second key cache named extra_cache that has a size of 128KB, with the size of block buffers for caching table index blocks set to 2048 bytes. A ...
https://dev.mysql.com/doc/workbench/en/dbdoc-templates.html
COLUMNS_LISTING has the parent TABLES, which has the parent SCHEMATA, whose parent is the main dictionary. The following section has a table that helps you identify section requirements. This section provides an overview of creating and modifying ...
https://dev.mysql.com/doc/workbench/en/wb-preferences-modeling.html
Figure 3.12 Preferences: Modeling: Defaults The following tables show the object names and their default values. Figure 3.13 Preferences: Modeling: MySQL Model Default Target MySQL Version: [ version ] A limited subset of validation procedures and ... This section provides configuration options that affect the modeling functionality in MySQL Workbench (see the figure that ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-scanning-basic.html
This example makes use of the following classes and methods: Ndb_cluster_connection: connect() wait_until_ready() Ndb: init() getDictionary() startTransaction() closeTransaction() NdbTransaction: getNdbScanOperation() execute() NdbOperation: ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-advisor-syntax.html
Produces summarized output and sends it to stdout and to the heatwave_autopilot_report table. When a target schema is specified, Advisor generates recommendations for tables belonging to the target schema. Only run Advisor on multiple schemas if the ...The silent output type is useful if human-readable output is not required; when the output is consumed by a script, for ...
https://dev.mysql.com/doc/relnotes/heatwave/en/news-9-4-1.html
This update introduces additional data preparation information to NL2ML's responses that enable you to join dataset tables, exclude unnecessary columns, and split your data into training and testing tables through the use of a new TRAIN_TEST_SPLIT ... These release notes were created with the assistance of MySQL HeatWave ...
https://dev.mysql.com/doc/heatwave-aws/en/ha-prerequisites.html
As the DB system high availability feature uses MySQL Group Replication, for which each table must have a primary key. If you try to create a table without a primary key in a high availability DB system, it will fail. If you are migrating tables to ... Prerequisites 12.2 Prerequisites Here are some prerequisites for creating a high availability DB ...
https://dev.mysql.com/doc/refman/8.4/en/concurrent-inserts.html
If the variable is set to ALWAYS (or 2), concurrent inserts at the end of the table are permitted even for tables that have deleted rows. This is done to ensure that you can re-create an exact copy of your tables by applying the log during a backup ...If there are multiple INSERT statements, they are queued and performed in sequence, concurrently with the SELECT ...