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https://dev.mysql.com/doc/refman/8.0/en/sys-schema-usage.html
To generate a dump file, name the sys schema explicitly on the command line using either of these commands: mysqldump --databases --routines sys > sys_dump.sql mysqlpump sys > sys_dump.sql To reinstall the schema from the dump file, use this ...The ...Most of these views come in pairs, such that one member of the pair has the same name as the other member, plus a x$ ...
https://dev.mysql.com/doc/refman/8.0/en/server-option-variable-reference.html
The table lists command-line options (Cmd-line), options valid in configuration files (Option file), server system variables (System Var), and status variables (Status var) in one unified list, with an indication of where each option or variable is ... The following table lists all command-line options, system variables, and status variables applicable within ...For a version of this ...
https://dev.mysql.com/doc/refman/8.0/en/replication-administration-skip.html
First you need to identify the replicated event that caused the error. Details of the error and the last successfully applied transaction are recorded in the Performance Schema table replication_applier_status_by_worker. You can use mysqlbinlog to ... If replication stops due to an issue with an event in a replicated transaction, you can resume replication by skipping the failed transaction on the ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-selection.html
Each name in this list must be the name of an existing partition or subpartition of the specified table; if any of the partitions or subpartitions are not found, the statement fails with an error (partition 'partition_name' doesn't exist). Partition ... Explicit selection of partitions and subpartitions for rows matching a given WHERE condition is ...
https://dev.mysql.com/doc/refman/8.0/en/out-of-memory.html
Is it reasonable that it should return so many rows? If not, correct the query and try again. This causes it to use the mysql_use_result() C API function to retrieve the result set, which places less of a load on the client (but more on the server).
https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html
An implication of this is that ABS(-9223372036854775808) produces an error because the result cannot be stored in a signed BIGINT value. In MySQL 8.0.21 and later, the data type returned by ROUND() (and TRUNCATE()) is determined according to the ...
https://dev.mysql.com/doc/refman/8.0/en/channels-startup-options.html
The master_info_repository and relay_log_info_repository system variables must not be set to FILE when you use replication channels. In MySQL 8.0, the FILE setting is deprecated, and TABLE is the default, so the system variables can be omitted. From ... This section describes startup options which are impacted by the addition of replication ...
https://dev.mysql.com/doc/refman/8.0/en/create-server.html
CREATE SERVER server_name FOREIGN DATA WRAPPER wrapper_name OPTIONS (option [, option] ...) option: { HOST character-literal | DATABASE character-literal | USER character-literal | PASSWORD character-literal | SOCKET character-literal | OWNER ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-triggers.html
Is there a way to view all triggers in a given database? A.5.7. Is there a way to view all triggers in a given database? Yes. You can obtain a listing of all triggers defined on database dbname using a query on the INFORMATION_SCHEMA.TRIGGERS table ...Where can I find the documentation for MySQL 8.0 triggers? ...Is it ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-waits-current-table.html
SOURCE The name of the source file containing the instrumented code that produced the event and the line number in the file at which the instrumentation occurs. For example, it can be used with GROUP BY OBJECT_INSTANCE_BEGIN to see whether the load ...The table stores one row per thread showing the current status of the thread's most recent monitored wait event, so there is no system variable for configuring the table ...