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https://dev.mysql.com/doc/internals/en/tracing-example.html
All traces have the same basic structure, but if a statement uses subqueries, there are several join preparations/optimizations/executions, subquery-specific transformations not shown here... The statement's execution is naturally made of "steps": ...
https://dev.mysql.com/doc/ndbapi/en/mccj-overview-clusterj-object-models.html
The QueryBuilder interface makes it possible to construct criteria queries dynamically, using domain object model properties as query modeling elements. This section discusses the ClusterJ API and the object model used to represent the data handled ...
https://dev.mysql.com/doc/ndbapi/en/ndb-error-codes-schema-error.html
The following list enumerates all NDB errors of type SE (Schema error).
https://dev.mysql.com/doc/relnotes/connector-net/en/news-8-0-10.html
Functionality Added or Changed Bugs Fixed Functionality Added or Changed The .NET Core 2.0 implementation now supports the following connection-string options: AutoEnlist, InteractiveSession, Logging, Replication, and UseUsageAdvisor. (Bug ...
https://dev.mysql.com/doc/relnotes/connector-odbc/en/news-8-0-26.html
Deprecation and Removal Notes Functionality Added or Changed Bugs Fixed Deprecation and Removal Notes The TLSv1.0 and TLSv1.1 connection protocols are now deprecated and support for them is subject to removal in a future Connector/ODBC version. (WL ...
https://dev.mysql.com/doc/relnotes/connector-odbc/en/news-9-1-0.html
(Bug #36972449) Fixed a potential Out of Bounds (OOB) issue related to escaping large queries. (Bug #115584, Bug #36841317) When connected to a MySQL 5.7 server, queries using bound parameters would not succeed and emitted a "No data supplied for ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-innodb-rowactivity-category.html
Table 6.15 InnoDB Row Activity Metrics NameDescriptionRow Queries Inside The number of queries executing inside InnoDB. Row Queries Queue The number of queries in the queue, waiting to enter InnoDB. Lists the InnoDB Row Activity metrics and ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-mysqlserver-dmlstatementactivity-category.html
Lists the DML Statement Activity metrics and provides a brief description of each. Table 6.6 DML Statement Activity Metrics NameDescriptionCall Procedure (Delta) The total number of CALL statements executed. Dealloc SQL (Delta) The total number of ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-mysqlserver-handleractivity-category.html
If this value is high, it is a good indication that your tables are properly indexed for your queries. This value is high if you are doing a lot of queries that require sorting of the result. Lists the Handler Activity metrics and provides a brief ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-sysschema-tablemetadatalockwaiters-category.html
Lists the Sys Schema Table Metadata Lock Waits metrics and provides a brief description of each. Table 6.41 Sys Schema Table Metadata Lock Waits Metrics NameDescriptionBlocking Account The account of the session that is blocking the current ...