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https://dev.mysql.com/doc/internals/en/getting-index-information.html
The reasoning behind this is that the index information is most readily available during table and index creation and is not as easily retrieved afterward. See ha_myisam.cc for an example of how this information is parsed. It is preferable for ...
https://dev.mysql.com/doc/internals/en/mysys-directory.html
There are 125 *.c programs in this directory: array.c --- Dynamic array handling charset.c --- Using dynamic character sets, set default character set, ... For example, the main functions in my_getwd.c are described thus: "int my_getwd _A((string ...
https://dev.mysql.com/doc/internals/en/optimizer-or-relations.html
An ORed search has the form condition1 OR condition2, as in this example: WHERE column1 = 'x' OR column2 = 'y' Here the optimizer's decision is to use a sequential scan. For example: WHERE column1 = 'x' OR column1 = 'y' In such a case, the search ...There is also an option to use index merge under such ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-options-variables.html
This section provides information about MySQL server options, server and status variables that are specific to NDB Cluster. 25.4.3.9.1 MySQL Server Options for NDB Cluster This section provides descriptions of mysqld server options relating to NDB ...For general information on using these, and for other options and variables not specific to NDB Cluster, see Section 7.1, “The MySQL ...
https://dev.mysql.com/doc/workbench/en/dbdoc-templates-markers.html
These markers can be used in any template, including custom templates. Using the table The table shows which variables are defined in which sections. The variable should be used in its correct section or its value will not be displayed. If a ...
https://dev.mysql.com/doc/internals/en/the-myi-file.html
With Linux this is possible using od -h T.MYI; with Windows you can use the command-line debugger. Anything following this point, up till the first key value, is filler. This item is analogous to the ROWID, or RID (row identifier), which other DBMSs ... A .MYI file for a MyISAM table contains the table's ...
https://dev.mysql.com/doc/ndbapi/en/ndb-errors-handling.html
Abstract This section describes how NDB API errors can be detected and mapped onto particular operations. By default, read operations are run with AO_IgnoreError, and write operations are run with AbortOnError, but this can be overridden by the ...
https://dev.mysql.com/doc/ndbapi/en/ndb-nodejs-api-mynode.html
This class is used to generate and obtain information about sessions (Session objects). To create an instance, use the Node.js require() function with the driver name, like this: var nosql = require("mysql-js"); ConnectionProperties can be used to ...ndb_connectstring: NDB Cluster connection string used to connect to the management ...
https://dev.mysql.com/doc/ndbapi/en/ndb-nodejs-examples-requirements.html
The software requirements for running the examples found in the next few sections are as follows: A working Node.js installation Working installations of the ndb and mysql-js adapters The mysql-js adapter also requires a working installation of the ...
https://dev.mysql.com/doc/internals/en/optimizer-determining-join-type.html
(This is called an indexed search.) For each row, examine the value in unindexed_column to see if it meets the condition. (Again: despite the word “join”, this applies for all conditional expressions, not just join expressions. For example, ...