DELETE TRIGGER Command
Removes a Delete, Insert, or Update trigger for a table from the current database.
DELETE TRIGGER ON TableName FOR DELETE | INSERT | UPDATE
Parameters
- TableName
Specifies the name of table for which the trigger is deleted.
- FOR DELETE | INSERT | UPDATE
Specifies the trigger to delete. Include FOR DELETE to remove the Delete trigger, FOR INSERT to remove the Insert trigger, and FOR UPDATE to remove the Update trigger.
Remarks
Use CREATE TRIGGER to create a Delete, Insert, or Update trigger for a table.
Example
The following example creates an Update trigger, which prevents values greater than 50 from being entered in the maxordamt field in the customer table. DISPLAY DATABASE is used to display the Update trigger. DELETE TRIGGER is then used to remove the Update trigger, and DISPLAY DATABASE is issued again to verify the removal of the Update trigger.
CLOSE DATABASES
OPEN DATABASE (HOME(2) + 'Data\testdata') && Open testdata database
USE CUSTOMER && Open customer table
CREATE TRIGGER ON customer FOR UPDATE AS maxordamt <= 50
CLEAR
DISPLAY DATABASE
DELETE TRIGGER ON customer FOR UPDATE
DISPLAY DATABASE
See Also
Reference
ADD TABLE Command
AERROR( ) Function
CREATE DATABASE Command
CREATE TRIGGER Command
DISPLAY DATABASE Command
LIST DATABASE Command
OPEN DATABASE Command