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https://dev.mysql.com/doc/refman/5.7/en/my-print-defaults.html
my_print_defaults displays the options that are present in option groups of option files. The output indicates what options are used by programs that read the specified option groups. For example, the mysqlcheck program reads the [mysqlcheck] and ...
https://dev.mysql.com/doc/refman/5.7/en/option-files.html
The rules for escape sequences in option files differ slightly from the rules for escape sequences in string literals in SQL statements. Most MySQL programs can read startup options from option files (sometimes called configuration files). Option ...
https://dev.mysql.com/doc/refman/5.7/en/begin-end.html
Use of multiple statements requires that a client is able to send statement strings containing the ; statement delimiter. END syntax is used for writing compound statements, which can appear within stored programs (stored procedures and functions, ...
https://dev.mysql.com/doc/refman/5.7/en/connection-access.html
The client supplies the credentials specified in the row (for example, a password), as indicated by the authentication_string column. The authentication method implemented by the plugin that authenticates the client may or may not use the password ... When you attempt to connect to a MySQL server, the server accepts or rejects the connection based on these conditions: Your identity and whether you can verify it by supplying the proper ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-status-variables.html
If the group is operating in multi-primary mode, shows an empty string. MySQL 5.7 supports one status variable providing information about Group Replication. This variable is described here: group_replication_primary_member Shows the primary ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-optimizer-trace-table.html
MISSING_BYTES_BEYOND_MAX_MEM_SIZE Each remembered trace is a string that is extended as optimization progresses and appends data to it. The OPTIMIZER_TRACE table provides information produced by the optimizer tracing capability for traced ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-init-startup-configuration.html
(The MySQL server changes its current working directory to the data directory when it begins executing.) If you specify innodb_data_home_dir as an empty string, you can specify absolute paths for data files listed in the innodb_data_file_path value.
https://dev.mysql.com/doc/refman/5.7/en/replication-channels.html
To provide compatibility with previous versions, the MySQL server automatically creates on startup a default channel whose name is the empty string (""). In MySQL multi-source replication, a replica opens multiple replication channels, one for each ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-reference.html
Set to empty string to disallow type conversions between source and replica. The following two sections provide basic information about the MySQL command-line options and system variables applicable to replication and the binary log. Replication ...
https://dev.mysql.com/doc/refman/5.7/en/account-activity-auditing.html
To extract the user name or host name part from a CURRENT_USER() or USER() value, use the SUBSTRING_INDEX() function: mysql> SELECT SUBSTRING_INDEX(CURRENT_USER(),'@',1); +---------------------------------------+ | ... Applications can use the ...