PDF (US Ltr)
- 35.0Mb
PDF (A4)
- 35.1Mb
Man Pages (TGZ)
- 254.9Kb
Man Pages (Zip)
- 359.8Kb
Info (Gzip)
- 3.4Mb
Info (Zip)
- 3.4Mb
Search Results
https://dev.mysql.com/doc/refman/5.7/en/select-benchmarking.html
To measure the speed of a specific MySQL expression or function, invoke the BENCHMARK() function using the mysql client program. The built-in MySQL functions are typically highly optimized, but there may be some exceptions. BENCHMARK() is an ...The ...
https://dev.mysql.com/doc/refman/5.7/en/stored-routines-last-insert-id.html
Within the body of a stored routine (procedure or function) or a trigger, the value of LAST_INSERT_ID() changes the same way as for statements executed outside the body of these kinds of objects (see Section 12.15, “Information Functions”). For ...The effect of a stored routine or trigger upon the value of LAST_INSERT_ID() that is seen by following statements depends on the kind of routine: If a stored procedure executes statements that change the value of LAST_INSERT_ID(), the changed value is seen by statements that follow the procedure ...
https://dev.mysql.com/doc/refman/5.7/en/sys-extract-schema-from-file-name.html
This function assumes that the file name lies within the schema directory. This function is useful when extracting file I/O information from the Performance Schema that includes file path names. Given a file path name, returns the path component ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-consumer-enabled.html
(Prior to MySQL 5.7.28, the function returns NULL if the argument is not a valid consumer name.) This function accounts for the consumer hierarchy, so a consumer is not considered enabled unless all consumers on which depends are also enabled.
https://dev.mysql.com/doc/refman/5.7/en/sys-extract-table-from-file-name.html
This function is useful when extracting file I/O information from the Performance Schema that includes file path names. Given a file path name, returns the path component that represents the table name. It provides a convenient way to display table ...
https://dev.mysql.com/doc/refman/5.7/en/sys-list-add.html
This function and list_drop() can be useful for manipulating the value of system variables such as sql_mode and optimizer_switch that take a comma-separated list of values. Adds a value to a comma-separated list of values and returns the result.
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-thread-trx-info.html
Returns a JSON object containing information about a given thread. The information includes the current transaction, and the statements it has already executed, derived from the Performance Schema events_transactions_current and ...
https://dev.mysql.com/doc/refman/5.7/en/sys-version-major.html
This function returns the major version of the MySQL server. Example mysql> SELECT VERSION(), sys.version_major(); +------------------+---------------------+ | VERSION() | sys.version_major() | +------------------+---------------------+ | ...
https://dev.mysql.com/doc/refman/5.7/en/sys-version-minor.html
This function returns the minor version of the MySQL server. Example mysql> SELECT VERSION(), sys.version_minor(); +------------------+---------------------+ | VERSION() | sys.version_minor() | +------------------+---------------------+ | ...
https://dev.mysql.com/doc/refman/5.7/en/sys-version-patch.html
This function returns the patch release version of the MySQL server. Example mysql> SELECT VERSION(), sys.version_patch(); +------------------+---------------------+ | VERSION() | sys.version_patch() | +------------------+---------------------+ | ...