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https://dev.mysql.com/doc/refman/8.4/en/with.html
Common Table Expressions Recursive Common Table Expressions Limiting Common Table Expression Recursion Recursive Common Table Expression Examples Common Table Expressions Compared to Similar Constructs For information about CTE optimization, see ...
https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-4.html
Account Management Notes C API Notes Character Set Support Compilation Notes Component Notes Firewall Notes Installation Notes Optimizer Notes Performance Schema Notes Functionality Added or Changed Bugs Fixed Account Management Notes The database ...We solve this by introducing a separate MEM_ROOT object for storing the bind parameters array, which object can be cleared (deallocating the memory) on each call to mysql_stmt_bind_param() or ...
https://dev.mysql.com/doc/workbench/en/wb-performance-explain.html
For information about how MySQL executes statements, see Optimizing Queries with EXPLAIN. For more information about cost estimates, see The Optimizer Cost Model. No usable indexes were found for the table, which forces the optimizer to search every ... The visual explain feature generates and displays a visual representation of the MySQL EXPLAIN statement by using extended information available in the extended JSON ...
https://dev.mysql.com/doc/connectors/en/connector-odbc-usagenotes-apptips-microsoft.html
The majority of Microsoft applications have been tested with Connector/ODBC, including Microsoft Office, Microsoft Access and the various programming languages supported within ASP and Microsoft Visual Studio. 5.8.2.1.1 Microsoft Access To improve ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-bulk-load-mysql-server.html
It can do the following: Optimize the loading of data sorted by primary key. MySQL includes a bulk load extension to the LOAD DATA statement that is only available in MySQL HeatWave on AWS. Monitor bulk load progress with the Performance Schema (As ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-limitations-joins.html
NOT EXISTS (...) IS NOT TRUE Depending on transformations and optimizations performed by MySQL, other variants of EXISTS semijoins may or may not be offloaded. NOT IN (...) IS FALSE Depending on transformations and optimizations performed by MySQL, ... Antijoins, with the exception of supported IN and EXISTS antijoin variants listed ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-partitioning.html
Important Notes JOIN and GROUP BY query optimizations are only applied if at least one of the JOIN or GROUP BY relations has a key that matches the defined data placement key. If you execute a JOIN operation with or without the JOIN and GROUP BY ...
https://dev.mysql.com/doc/refman/8.4/en/comments.html
Another variant of C-style comment syntax is used to specify optimizer hints. If there is a concern that optimizer-hint comments may be stored in object definitions so that dump files when reloaded with mysql would result in execution of such ...
https://dev.mysql.com/doc/refman/8.4/en/create-index.html
To support this kind of scenario for functional key parts, the optimizer automatically strips CAST() when looking for an index to use, but only if the collation of the indexed expression matches that of the query expression. CREATE [UNIQUE | ...
https://dev.mysql.com/doc/refman/8.4/en/docker-mysql-more-topics.html
Warning Any software updates or installations users perform to the Docker container (including those for MySQL components) may conflict with the optimized MySQL installation created by the Docker image. A MySQL Docker installation is different from ...