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https://dev.mysql.com/doc/refman/8.4/en/bnl-bka-optimization.html
If an outer join operation is executed using a join buffer, each row of the table produced by the second operand is checked for a match against each row in the join buffer. An incremental join buffer contains only columns from rows of the table ...
https://dev.mysql.com/doc/refman/8.4/en/processlist-access.html
For a replica SQL thread, the value is the number of seconds between the timestamp of the last replicated event and the real time of the replica host. If a thread stays in a given state for many seconds, there might be a problem that needs to be ...
https://dev.mysql.com/doc/internals/en/example-several-mysql-packets.html
Executing SELECT repeat("a", 50) results in uncompressed ProtocolText::Resultset like: 01 00 00 01 01 25 00 00 02 03 64 65 66 00 00 00 .....%....def... 0f 72 65 70 65 61 74 28 22 61 22 2c 20 35 30 29 .repeat("a", 50) 00 0c 08 00 32 00 00 00 fd 01 ...
https://dev.mysql.com/doc/refman/8.4/en/server-configuration-validation.html
MySQL supports a --validate-config option that enables the startup configuration to be checked for problems without running the server in normal operational mode: mysqld --validate-config If no errors are found, the server terminates with an exit ...For additional checks to occur, correct the initial problem and run the server with --validate-config ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-statistics-estimation.html
Values much larger than 8 (say, 100), can cause a significant slowdown in the time it takes to open a table or execute SHOW TABLE STATUS. Because the statistics are automatically recalculated at various times other than on execution of ANALYZE ...
https://dev.mysql.com/doc/ndbapi/en/ndb-start-establishing-connection.html
When invoked without any arguments, the connection attempt is retried indefinitely, once per second, until successful. To enable connections with data nodes, use wait_until_ready() after calling connect(); wait_until_ready() waits up to a given ...
https://dev.mysql.com/doc/connectors/en/connector-cpp-installation-source-distribution.html
To obtain a Connector/C++ source distribution, visit the Connector/C++ downloads page. A Connector/C++ source distribution is packaged as a compressed tar file or Zip archive, denoted here as PACKAGE.tar.gz or PACKAGE.zip. A source distribution in ...
https://dev.mysql.com/doc/connectors/en/connector-net-tutorials-efmodel-ddl.html
This tutorial demonstrates how to create MySQL DDL from an Entity Framework model. Minimally, you will need Microsoft Visual Studio 2017 and MySQL Connector/NET 6.10 to perform this tutorial. Select ADO.NET Entity Data Model and click Add to open ...
https://dev.mysql.com/doc/connectors/en/connector-odbc-examples-tools-with-access-import.html
To import tables from MySQL to Access, follow these instructions: Open the Access database into which that you want to import MySQL data. Figure 5.18 External Data: ODBC Database In the Get External Data dialog box that appears, choose Import the ...
https://dev.mysql.com/doc/connector-net/en/connector-net-tutorials-efmodel-ddl.html
This tutorial demonstrates how to create MySQL DDL from an Entity Framework model. Minimally, you will need Microsoft Visual Studio 2017 and MySQL Connector/NET 6.10 to perform this tutorial. Select ADO.NET Entity Data Model and click Add to open ...