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https://dev.mysql.com/doc/internals/en/optimizer-and-relations.html
An ANDed search has the form condition1 AND condition2, as in this example: WHERE column1 = 'x' AND column2 = 'y' Here, the optimizer's decision process can be described as follows: If (neither condition is indexed) use sequential scan. SELECT * ...
https://dev.mysql.com/doc/internals/en/regex-directory.html
One MySQL program which uses regex is \cmd-line-utils\libedit\search.c This program calls the 'regcomp' function, which is the entry point in \regex\regexp.c. This is the copyrighted product of Henry Spencer from the University of Toronto. MySQL's ... Henry Spencer's Regular Expression library for support of REGEXP ...
https://dev.mysql.com/doc/x-devapi-userguide/en/working-with-locking.html
This enables you to control row locking to ensure safe, transactional document updates on collections and to avoid concurrency problems, for example when using the modify() method. This section describes how to use the lockShared() and ... X DevAPI ...
https://dev.mysql.com/doc/x-devapi-userguide-shell-js/en/working-with-locking.html
This enables you to control row locking to ensure safe, transactional document updates on collections and to avoid concurrency problems, for example when using the modify() method. This section describes how to use the lockShared() and ... X DevAPI ...
https://dev.mysql.com/doc/x-devapi-userguide-shell-python/en/working-with-locking.html
This enables you to control row locking to ensure safe, transactional document updates on collections and to avoid concurrency problems, for example when using the modify() method. This section describes how to use the lockShared() and ... X DevAPI ...
https://dev.mysql.com/doc/workbench/en/dbdoc-templates-custom.html
This preview file provides a thumbnail image illustrating the appearance of the generated report. Assuming that MySQL Workbench has been installed into the default location on Windows, this is C:\Program Files\MySQL\MySQL Workbench 8.0 ... In the ...
https://dev.mysql.com/doc/workbench/en/dbdoc-templates.html
This section provides an overview of creating and modifying DBDoc Model Reporting templates, as used by MySQL Workbench. This discussion does not attempt to explain the Google Template System in detail. Consider the following template as an attempt ...The MySQL Workbench DBDoc Model Reporting system is based on the Google Template ...
https://dev.mysql.com/doc/connectors/en/connector-j-connp-props-x-protocol-and-x-devapi.html
This option accepts one of the three values: "PREFERRED", "REQUIRED", and "DISABLED". Setting this option to "PREFERRED" or "REQUIRED" enables compression algorithm negotiation between Connector and Server, and turns on compression of large X ...If ...
https://dev.mysql.com/doc/internals/en/connection-phase-packets.html
username (string.fix_len) -- name of the SQL account which client wants to log in -- this string should be interpreted using the character set indicated by character set field. database (string.NUL) -- initail database for the connection -- this ...
https://dev.mysql.com/doc/internals/en/debug-sync-facility.html
This signal thread copies the signal name into a global list and broadcasts the event which wakes the threads that wait for this event. To do so, assign a value to the DEBUG_SYNC system variable: SET DEBUG_SYNC= 'after_open_tables SIGNAL opened ...