Which of the following trigger is executed after inserting the data into the table?
Triggers on DML statements include the following triggers: BEFORE INSERT and AFTER INSERT triggers fire for each row inserted into the table. BEFORE UPDATE and AFTER UPDATE triggers fire for each row updated in the table.
What is inserted in trigger?
The inserted table stores copies of the affected rows during INSERT and UPDATE statements. During an insert or update transaction, new rows are added to both the inserted table and the trigger table. The rows in the inserted table are copies of the new rows in the trigger table.
What are the after trigger?
An after trigger runs after the corresponding insert, update, or delete changes are applied to the table. The WHEN condition can be used in an SQL trigger to specify a condition. If the condition evaluates to true, the SQL statements in the SQL trigger routine body are run.
What is after insert trigger?
An AFTER INSERT Trigger means that MySQL will fire this trigger after the INSERT operation is executed.
How do you insert a trigger?
CREATE TRIGGER trigger_name AFTER INSERT. ON table_name FOR EACH ROW. BEGIN….The AFTER INSERT trigger syntax parameter can be explained as below:
- First, we will specify the name of the trigger that we want to create.
- Second, we will specify the trigger action time, which should be AFTER INSERT clause to invoke the trigger.
What happens to the inserted table in SQL Server?
The inserted table stores copies of the affected rows during INSERT and UPDATE statements. During an insert or update transaction, new rows are added to both the inserted table and the trigger table.
When to use the inserted table in a trigger?
An Example of Using the inserted Table in a Trigger to Enforce Business Rules. Because CHECK constraints can reference only the columns on which the column-level or table-level constraint is defined, any cross-table constraints (in this case, business rules) must be defined as triggers.
Is the deleted table the same as the trigger table?
The trigger table is the table on which the DML trigger runs. The deleted table and the trigger table ordinarily have no rows in common. The inserted table stores copies of the affected rows during INSERT and UPDATE statements.
How is an update transaction similar to an insert transaction?
The rows in the inserted table are copies of the new rows in the trigger table. An update transaction is similar to a delete operation followed by an insert operation; the old rows are copied to the deleted table first, and then the new rows are copied to the trigger table and to the inserted table.