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https://dev.mysql.com/doc/refman/8.0/en/set-resource-group.html

If the resource group or any named thread ID does not exist, an error occurs. Thread IDs can be determined from the Performance Schema threads table. With no FOR clause, the statement assigns the current thread for the session to the resource group.

15.7.7.12 SHOW CREATE USER Statement

https://dev.mysql.com/doc/refman/8.0/en/show-create-user.html

SHOW CREATE USER user This statement shows the CREATE USER statement that creates the named user. The statement requires the SELECT privilege for the mysql system schema, except to see information for the current user. For the current user, the ...

15.7.7.29 SHOW PROCESSLIST Statement

https://dev.mysql.com/doc/refman/8.0/en/show-processlist.html

The SHOW PROCESSLIST statement is very useful if you get the “too many connections” error message and want to find out what is going on. db The default database for the thread, or NULL if none has been selected. SHOW [FULL] PROCESSLIST ...

15.7.7 SHOW Statements

https://dev.mysql.com/doc/refman/8.0/en/show.html

SHOW has many forms that provide information about databases, tables, columns, or status information about the server. In addition, you can work in SQL with results from queries on tables in the INFORMATION_SCHEMA database, which you cannot easily ...The pattern is useful for restricting statement output to matching ...Several SHOW statements also accept a WHERE ...

2.8.6 Configuring SSL Library Support

https://dev.mysql.com/doc/refman/8.0/en/source-ssl-library-configuration.html

If the installed OpenSSL version is older than 1.0.1, CMake produces an error at MySQL configuration time. An SSL library is required for support of encrypted connections, entropy for random number generation, and other encryption-related ...To ...

15.6.4 Variables in Stored Programs

https://dev.mysql.com/doc/refman/8.0/en/stored-program-variables.html

System variables and user-defined variables can be used in stored programs, just as they can be used outside stored-program context. In addition, stored programs can use DECLARE to define local variables, and stored routines (procedures and ...

30.4.5.10 The ps_is_consumer_enabled() Function

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-consumer-enabled.html

If the argument is not a valid consumer name, an error occurs. Returns YES or NO to indicate whether a given Performance Schema consumer is enabled, or NULL if the argument is NULL. (Prior to MySQL 8.0.18, the function returns NULL if the argument ...Example mysql> SELECT sys.ps_is_consumer_enabled('thread_instrumentation'); +------------------------------------------------------+ | sys.ps_is_consumer_enabled('thread_instrumentation') | +------------------------------------------------------+ | YES | ...

30.4.4.22 The ps_trace_statement_digest() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-trace-statement-digest.html

If you find a statement of interest within the Performance Schema events_statements_summary_by_digest table, specify its DIGEST column MD5 value to this procedure and indicate the polling duration and interval. The result is a report of all ...

30.4.3.35 The statement_analysis and x$statement_analysis Views

https://dev.mysql.com/doc/refman/8.0/en/sys-statement-analysis.html

db The default database for the statement, or NULL if there is none. err_count The total number of errors produced by occurrences of the statement. The statement_analysis and x$statement_analysis views have these columns: query The normalized ...

30.4.3.38 The statements_with_runtimes_in_95th_percentile and x$statements_with_runtimes_in_95th_percentile Views

https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-runtimes-in-95th-percentile.html

db The default database for the statement, or NULL if there is none. err_count The total number of errors produced by occurrences of the statement. These views list statements with runtimes in the 95th percentile. The ...

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