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Information Schema TRIGGERS Table

The Information Schema TRIGGERS table contains information about triggers.

It has the following columns:

Column Description
TRIGGER_CATALOG Always def.
TRIGGER_SCHEMA Database name in which the trigger occurs.
TRIGGER_NAME Name of the trigger.
EVENT_MANIPULATION The event that activates the trigger. One of INSERT, UPDATE or 'DELETE.
EVENT_OBJECT_CATALOG Always def.
EVENT_OBJECT_SCHEMA Database name on which the trigger acts.
EVENT_OBJECT_TABLE Table name on which the trigger acts.
ACTION_ORDER Indicates the order that the action will be performed in (of the list of a table's triggers with identical EVENT_MANIPULATION and ACTION_TIMING values). Before MariaDB 10.2.3 introduced the FOLLOWS and PRECEDES clauses, always 0
ACTION_CONDITION NULL
ACTION_STATEMENT Trigger body, UTF-8 encoded.
ACTION_ORIENTATION Always ROW.
ACTION_TIMING Whether the trigger acts BEFORE or AFTER the event that triggers it.
ACTION_REFERENCE_OLD_TABLE Always NULL.
ACTION_REFERENCE_NEW_TABLE Always NULL.
ACTION_REFERENCE_OLD_ROW Always OLD.
ACTION_REFERENCE_NEW_ROW Always NEW.
CREATED Always NULL.
SQL_MODE The SQL_MODE when the trigger was created, and which it uses for execution.
DEFINER The account that created the trigger, in the form [email protected]_name
CHARACTER_SET_CLIENT The client character set when the trigger was created, from the session value of the character_set_client system variable.
COLLATION_CONNECTION The client collation when the trigger was created, from the session value of the collation_connection system variable.
DATABASE_COLLATION Collation of the associated database.

Queries to the TRIGGERS table will return information only for databases and tables for which you have the TRIGGER privilege. Similar information is returned by the SHOW TRIGGERS statement.

See also

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https://mariadb.com/kb/en/information-schema-triggers-table/