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https://dev.mysql.com/doc/refman/8.0/en/trigger-syntax.html
To create a trigger or drop a trigger, use the CREATE TRIGGER or DROP TRIGGER statement, described in Section 15.1.22, “CREATE TRIGGER Statement”, and Section 15.1.34, “DROP TRIGGER Statement”. Here is a simple example that associates a ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-triggers.html
Where can I find the documentation for MySQL 8.0 triggers? A.5.2. Is there a way to view all triggers in a given database? A.5.7. Can a table have multiple triggers with the same trigger event and action time? A.5.11. Is it possible for a trigger to ...MySQL does have specific special behavior for some TIMESTAMP columns, as well as for columns which are defined using ...
https://dev.mysql.com/doc/refman/8.0/en/create-trigger.html
CREATE [DEFINER = user] TRIGGER [IF NOT EXISTS] trigger_name trigger_time trigger_event ON tbl_name FOR EACH ROW [trigger_order] trigger_body trigger_time: { BEFORE | AFTER } trigger_event: { INSERT | UPDATE | DELETE } trigger_order: { FOLLOWS | ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-triggers.html
With statement-based replication, triggers executed on the source also execute on the replica. With row-based replication, triggers executed on the source do not execute on the replica. Instead, the row changes on the source resulting from trigger ...It is sufficient to switch to statement-based replication only for those statements where you want this effect, and to use row-based replication the rest of the ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-triggers-table.html
To see information about a table's triggers, you must have the TRIGGER privilege for the table. The TRIGGERS table has these columns: TRIGGER_CATALOG The name of the catalog to which the trigger belongs. TRIGGER_SCHEMA The name of the schema ...The ...
https://dev.mysql.com/doc/refman/8.0/en/show-triggers.html
SHOW TRIGGERS [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW TRIGGERS lists the triggers currently defined for tables in a database (the default database unless a FROM clause is given). This statement returns results only for databases ...
https://dev.mysql.com/doc/refman/8.0/en/show-create-trigger.html
SHOW CREATE TRIGGER trigger_name This statement shows the CREATE TRIGGER statement that creates the named trigger. This statement requires the TRIGGER privilege for the table associated with the trigger. row *************************** Trigger: ...
https://dev.mysql.com/doc/refman/8.0/en/triggers.html
A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Some uses for triggers are to perform checks of values to be inserted into a table or to perform calculations on ...
https://dev.mysql.com/doc/refman/8.0/en/drop-trigger.html
DROP TRIGGER [IF EXISTS] [schema_name.]trigger_name This statement drops a trigger. If the schema is omitted, the trigger is dropped from the default schema. DROP TRIGGER requires the TRIGGER privilege for the table associated with the trigger. Use ...
https://dev.mysql.com/doc/refman/8.0/en/trigger-metadata.html
To obtain metadata about triggers: Query the TRIGGERS table of the INFORMATION_SCHEMA database.