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https://dev.mysql.com/doc/refman/5.7/en/sys-diagnostics.html
Use NULL to collect data for the default of 60 seconds. 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 ...
https://dev.mysql.com/doc/refman/5.7/en/sys-processlist.html
db The default database for the thread, or NULL if there is none. current_statement The statement the thread is executing, or NULL if it is not executing any statement. The MySQL process list indicates the operations currently being performed by ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-thread-instrumented.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given connection ID is enabled, UNKNOWN if the ID is unknown, or NULL if the ID is NULL. This is a value of the type given in the PROCESSLIST_ID column of the ...
https://dev.mysql.com/doc/refman/5.7/en/mysqlslap.html
Invoke mysqlslap like this: mysqlslap [options] Some options such as --create or --query enable you to specify a string containing an SQL statement or a file containing statements. --create=value Command-Line Format --create=value Type String The ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-command-options.html
--binary-as-hex when enabled affects display of all binary strings, including those returned by functions such as CHAR() and UNHEX(). By default, mysql translates \r\n in statement strings to \n and interprets \0 as the statement terminator. mysql ...
https://dev.mysql.com/doc/refman/5.7/en/pam-pluggable-authentication.html
Proxy user support: PAM authentication can return to MySQL a user name different from the external user name passed by the client program, based on the PAM groups the external user is a member of and the authentication string provided. The PAM ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-waiter.html
State node 1 STARTED State node 2 STARTED State node 3 STARTED State node 4 STARTED Waiting for cluster enter state STARTED Note If no connection string is specified, then ndb_waiter tries to connect to a management on localhost, and reports ...
https://dev.mysql.com/doc/refman/5.7/en/faqs-cjk.html
Why do I get Incorrect string value error messages? To see the problem, create a table with one Unicode (ucs2) column and one Chinese (gb2312) column. row *************************** Level: Warning Code: 1366 Message: Incorrect string value: ...
https://dev.mysql.com/doc/refman/5.7/en/extensions-to-ansi.html
RENAME and let the server rename the files.) General language syntax By default, strings can be enclosed by " as well as '. If the ANSI_QUOTES SQL mode is enabled, strings can be enclosed only by ' and the server interprets strings enclosed by " as ... MySQL Server supports some extensions that are likely not to be found in other SQL ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-compression-tuning.html
When to Use Compression In general, compression works best on tables that include a reasonable number of character string columns and where the data is read far more often than it is written. Recall that compression works by identifying repeated ...