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https://dev.mysql.com/doc/refman/5.7/en/trigger-syntax.html

Within the BEGIN block, you also can use other syntax that is permitted within stored routines such as conditionals and loops. To create a trigger or drop a trigger, use the CREATE TRIGGER or DROP TRIGGER statement, described in Section 13.1.20, ...

1.6.2.3 FOREIGN KEY Constraint Differences

https://dev.mysql.com/doc/refman/5.7/en/ansi-diff-foreign-keys.html

For example, if you define a RESTRICT type constraint, and there is a child row with several parent rows, InnoDB does not permit the deletion of any of the parent rows. If ON UPDATE CASCADE or ON UPDATE SET NULL recurses to update the same table it ...

21.6.3.2 NDB Cluster Log Events

https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-log-events.html

An event report reported in the event logs has the following format: datetime [string] severity -- message For example: 09:19:30 2005-07-24 [NDB] INFO -- Node 4 Start phase 4 completed This section discusses all reportable events, ordered by ...

15.8.3 FEDERATED Storage Engine Notes and Tips

https://dev.mysql.com/doc/refman/5.7/en/federated-usagenotes.html

It is possible for one FEDERATED table to point to another, but you must be careful not to create a loop. The following items indicate features that the FEDERATED storage engine does and does not support: The remote server must be a MySQL server.

8.14.3 General Thread States

https://dev.mysql.com/doc/refman/5.7/en/general-thread-states.html

The flag is checked in each major loop in MySQL, but in some cases it might still take a short time for the thread to die. The following list describes thread State values that are associated with general query processing and not more specialized ...

17.7.1 Group Replication System Variables

https://dev.mysql.com/doc/refman/5.7/en/group-replication-system-variables.html

This section lists the system variables that are specific to the Group Replication plugin. The name of each Group Replication system variable is prefixed with group_replication_. Most system variables for Group Replication are described as dynamic, ...

24.1 Introduction

https://dev.mysql.com/doc/refman/5.7/en/information-schema-introduction.html

INFORMATION_SCHEMA provides access to database metadata, information about the MySQL server such as the name of a database or table, the data type of a column, or access privileges. Other terms that are sometimes used for this information are data ...

4.5.1.4 mysql Client Server-Side Help

https://dev.mysql.com/doc/refman/5.7/en/mysql-server-side-help.html

To make a more specific request, please type 'help <item>', where <item> is one of the following topics: REPAIR TABLE REPEAT FUNCTION REPEAT LOOP REPLACE REPLACE FUNCTION . mysql> help search_string If you provide an argument to the help command, ...

21.6.17 Quick Reference: NDB Cluster SQL Statements

https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-sql-statements.html

This section discusses several SQL statements that can prove useful in managing and monitoring a MySQL server that is connected to an NDB Cluster, and in some cases provide information about the cluster itself. SHOW ENGINE NDB STATUS, SHOW ENGINE ...

14.18.3 InnoDB Standard Monitor and Lock Monitor Output

https://dev.mysql.com/doc/refman/5.7/en/innodb-standard-monitor.html

The Lock Monitor is the same as the Standard Monitor except that it includes additional lock information. Enabling either monitor for periodic output turns on the same output stream, but the stream includes extra information if the Lock Monitor is ...

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