For showing a particular trigger in a particular schema you can try the following:
select * from information_schema.triggers where
information_schema.triggers.trigger_name like '%trigger_name%' and
information_schema.triggers.trigger_schema like '%data_base_name%'
I hope following code will give you more information.
select * from information_schema.triggers where
information_schema.triggers.trigger_schema like '%your_db_name%'
This will give you total 22 Columns in MySQL version: 5.5.27 and Above
TRIGGER_CATALOG
TRIGGER_SCHEMA
TRIGGER_NAME
EVENT_MANIPULATION
EVENT_OBJECT_CATALOG
EVENT_OBJECT_SCHEMA
EVENT_OBJECT_TABLE
ACTION_ORDER
ACTION_CONDITION
ACTION_STATEMENT
ACTION_ORIENTATION
ACTION_TIMING
ACTION_REFERENCE_OLD_TABLE
ACTION_REFERENCE_NEW_TABLE
ACTION_REFERENCE_OLD_ROW
ACTION_REFERENCE_NEW_ROW
CREATED
SQL_MODE
DEFINER
CHARACTER_SET_CLIENT
COLLATION_CONNECTION
DATABASE_COLLATION
You can use below to find a particular trigger definition.
SHOW TRIGGERS LIKE '%trigger_name%'\G
or the below to show all the triggers in the database. It will work for MySQL 5.0 and above.
SHOW TRIGGERS\G
Source: Stackoverflow.com