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https://dev.mysql.com/doc/refman/5.7/en/information-schema-triggers-table.html
This is a TIMESTAMP(2) value (with a fractional part in hundredths of seconds) for triggers created in MySQL 5.7.2 or later, NULL for triggers created prior to 5.7.2. To see information about a table's triggers, you must have the TRIGGER privilege ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-ddl.html
You can access the underlying InnoDB table (which is test.demo_test by default) through standard SQL interfaces. However, there are some restrictions: When querying a table that is also accessed through the memcached interface, remember that ...
https://dev.mysql.com/doc/refman/5.7/en/numeric-type-attributes.html
When you insert a value of NULL into an indexed AUTO_INCREMENT column, the column is set to the next sequence value. (AUTO_INCREMENT sequences begin with 1.) Storing 0 into an AUTO_INCREMENT column has the same effect as storing NULL, unless the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-timing.html
The rows that do not contain NULL indicate which timers you can use in setup_timers. The timers in setup_timers that you can use are those that do not have NULL in the other columns. If the values associated with a given timer name are NULL, that ...
https://dev.mysql.com/doc/refman/5.7/en/source-configuration-options.html
The CMake program provides a great deal of control over how you configure a MySQL source distribution. Typically, you do this using options on the CMake command line. For information about options supported by CMake, run either of these commands in ...
https://dev.mysql.com/doc/refman/5.7/en/regexp.html
Table 12.14 Regular Expression Functions and Operators Name Description NOT REGEXP Negation of REGEXP REGEXP Whether string matches regular expression RLIKE Whether string matches regular expression A regular expression is a powerful way of ...This ...
https://dev.mysql.com/doc/refman/5.7/en/engine-condition-pushdown-optimization.html
column IS [NOT] NULL column IN (value_list) Each item in the value_list must be a constant, literal value. A string value to be compared with a column must use the same collation as the column. This optimization improves the efficiency of direct ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-config-editor.html
To see a command-specific help message, invoke mysql_config_editor as follows, where command is a command other than help: mysql_config_editor command --help --debug[=debug_options], -# debug_options Command-Line Format --debug[=debug_options] Type ... The mysql_config_editor utility enables you to store authentication credentials in an obfuscated login path file named ...
https://dev.mysql.com/doc/refman/5.7/en/version-tokens-usage.html
Each of those functions, if successful, returns a binary string indicating what action occurred. Version Tokens treats token names and values as binary strings, so comparisons are case-sensitive. Otherwise, an error occurs: mysql> SELECT ... Before ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-blob-tool.html
--connect-string Command-Line Format --connect-string=connection_string Type String Default Value [none] Same as --ndb-connectstring. --database=db_name, -d Command-Line Format --database=name Type String Default Value [none] Specify the database to ... This tool can be used to check for and remove orphaned BLOB column parts from NDB tables, as well as to generate a file listing any orphaned ...