Create After Insert Trigger in SQL

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Create After Insert Trigger in SQL

Create After Insert Trigger in SQL

     

Create a Trigger is a special kind of stored procedure, that fires when we perform modification on the specific data on the specified table.

Understand with Example

The Tutorial illustrate a example from 'Create After Insert Trigger in SQL'. In this Example, we create a table 'Stu_Table' and 'Stu_Log' using create table statement.

Create Table Stu_Table

 

 

 

Create Table Stu_Table( Stu_Id int, Stu_Name varchar(15),Stu_Class int);

Create Table Stu_Log 

create table stu_log( user_id VARCHAR(15), description VARCHAR(100));

Create Trigger Stu_Insert

The Query create a  trigger stu_insert on table 'stu_table'. Whenever we perform insert values into a table 'stu_table', an insert trigger is fired and performed for each rows in the table. Once the trigger operation is performed ,this will run the query inside the begin-end statement. The insert into add the records or rows value to the table stu_log.

delimiter $$
CREATE TRIGGER stu_insert
AFTER insert ON stu_table FOR EACH ROW
BEGIN

	INSERT into stu_log(user_id, description)
        VALUES (user(), CONCAT('Insert Student record ',
	new.stu_id,' ',new.stu_name,' ',new.stu_class));

END$$
delimiter ;

Insert Data Into Stu_Table 

insert into stu_table values(1, 'Komal',10);
insert into stu_table values(2, 'Ajay',10);
insert into stu_table values(3, 'Santosh',10);
insert into stu_table values(4, 'Rakesh',10);
insert into stu_table values(5, 'Bhau',10);

Stu_Table

+--------+----------+-----------+
| Stu_Id | Stu_Name | Stu_Class |
+--------+----------+-----------+
| 1      | Komal    | 10        |
| 2      | Ajay     | 10        |
| 3      | Santosh  | 10        |
| 4      | Rakesh   | 10        |
| 5      | Bhau     | 10        |
+--------+----------+-----------+

Stu_Log

+----------------+------------------------------------+
| user_id        | description                        |
+----------------+------------------------------------+
| root@localhost | Insert Student record 1 Komal 10   |
| root@localhost | Insert Student record 2 Ajay 10    |
| root@localhost | Insert Student record 3 Santosh 10 |
| root@localhost | Insert Student record 4 Rakesh 10  |
| root@localhost | Insert Student record 5 Bhau 10    |
+----------------+------------------------------------+

Tutorials

  1. Quartz Tutorial
  2. Introduction to Quartz Scheduler
  3. Download Quartz Job Scheduler
  4. Hello World Quartz Scheduler
  5. Jobs & Triggers
  6. More About Triggers
  7. More About Simple Trigger
  8. More About the CronTrigger
  9. Example of Cron Trigger
  10. Implementing more than one Job Details and Triggers
  11. Scheduler Shutdown Example
  12. TriggerListeners and JobListeners
  13. JobStores
  14. Configuration, Resource Usage and StdSchedulerFactory
  15. Establish a Connection with MySQL Database
  16. Advance (Enterprise) Features
  17. Quartz Tutorial
  18. Aggregate Functions in SQL, SQL Tutorial
  19. Backup File With Separator
  20. Backup Into txt File
  21. Backup selected records into txt file
  22. Call Procedure
  23. Close Cursors in SQL
  24. Create After Insert Trigger in SQL
  25. Create Before Insert Trigger in SQL
  26. Create Before Update Trigger in SQL
  27. Create Delete Trigger in SQL
  28. Create a Simple Procedure
  29. Create After Update Trigger in SQL
  30. Create Database in SQL,SQL Tutorial
  31. Creating Cursors in SQL
  32. Declare Cursors in SQL
  33. The DELETE Statement, SQL Tutorial
  34. SQL SELECT DISTINCT Statement
  35. Drop Index
  36. Drop Table
  37. Close Cursors in SQL
  38. Use HANDLER Statement in Cursors
  39. Insert Data From File
  40. The INSERT INTO Statement, SQL Tutorial