PDF (US Ltr)
- 43.3Mb
PDF (A4)
- 43.4Mb
Man Pages (TGZ)
- 297.2Kb
Man Pages (Zip)
- 402.4Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/dynamic-system-variables.html
Many server system variables are dynamic and can be set at runtime. For a description of the privilege requirements for setting system variables, see Section 7.1.9.1, “System Variable Privileges” The following table lists all dynamic system ...
https://dev.mysql.com/doc/refman/8.0/en/engine-condition-pushdown-optimization.html
This optimization improves the efficiency of direct comparisons between a nonindexed column and a constant. In such cases, the condition is “pushed down” to the storage engine for evaluation. This optimization can be used only by the NDB ...
https://dev.mysql.com/doc/refman/8.0/en/example-auto-increment.html
You can also explicitly assign 0 to the column to generate sequence numbers, unless the NO_AUTO_VALUE_ON_ZERO SQL mode is enabled. For example: INSERT INTO animals (id,name) VALUES(0,'groundhog'); If the column is declared NOT NULL, it is also ...
https://dev.mysql.com/doc/refman/8.0/en/extensions-to-ansi.html
MySQL Server supports some extensions that you are not likely to find in other SQL DBMSs. Be warned that if you use them, your code is most likely not portable to other SQL servers. For example, MySQL Server recognizes the STRAIGHT_JOIN keyword in ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-consumer-enabled.html
Returns YES or NO to indicate whether a given Performance Schema consumer is enabled, or NULL if the argument is NULL. If the argument is not a valid consumer name, an error occurs. (Prior to MySQL 8.0.18, the function returns NULL if the argument ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-account-enabled.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given account is enabled. Parameters in_host VARCHAR(60): The host name of the account to check. Example mysql> SELECT sys.ps_is_account_enabled('localhost', 'root'); ...
https://dev.mysql.com/doc/refman/8.0/en/sys-diagnostics.html
Creates a report of the current server status for diagnostic purposes. This procedure disables binary logging during its execution by manipulating the session value of the sql_log_bin system variable. That is a restricted operation, so the ...
https://dev.mysql.com/doc/refman/8.0/en/flow-control-functions.html
The second syntax returns the result for the first condition that is true. If no comparison or condition is true, the result after ELSE is returned, or NULL if there is no ELSE part. Note The syntax of the CASE operator described here differs ...
https://dev.mysql.com/doc/refman/8.0/en/string-types.html
The string data types are CHAR, VARCHAR, BINARY, VARBINARY, BLOB, TEXT, ENUM, and SET. For information about storage requirements of the string data types, see Section 13.7, “Data Type Storage Requirements”. For descriptions of functions that ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-install-example-data.html
Note The information in this section applies to NDB Cluster running on both Unix and Windows platforms. Working with database tables and data in NDB Cluster is not much different from doing so in standard MySQL. There are two key points to keep in ...