Home Discussion Discuss: TRIGGERS

  • triggers veeranagu April 14, 2011 at 9:54 AM

    Hello Sir, This is veeranagu from banagalore.

  • triggerNaresh June 27, 2011 at 1:06 PM

    its very good

  • advanced database systemmuhammed seid October 28, 2011 at 1:53 PM

    I always appreciate you.please continue improving your service to the World.......

  • advanced database systemmuhammed seid October 28, 2011 at 2:07 PM

    I'm an IT student. I want to know more about database. so, please help me.as beginning let me give you a question : by using the following table structure shown like this: stud_course(studId,corseNo,courseTitle,crhr) Write a trigger to prevent insertion of record at a point where the total sum of credits taken by the student exceeds 144 credit hours.

  • triggeranu December 20, 2011 at 10:13 PM

    why we are using triger and what is the usage?

  • Database TriggersGhulam Yassen January 14, 2012 at 5:29 PM

    Very Usefull information about Database Triggers. Beofre Reading This ARTICLE I were did't have any Info about Database Trigger But Now I have Created many more and Complicated and Complex Triggers after reading this article. Thanks to the Great Instructor.

  • trigger statementmohan.o February 9, 2012 at 12:52 PM

    please send me a trigger statement with best example and also a cursor and view concept.......................

  • query is not runningindhumathi March 29, 2012 at 12:21 PM

    DELIMITER $$ DROP PROCEDURE IF EXISTS dcb_collect_interest$$ CREATE PROCEDURE dcb_collect_interest() BEGIN DECLARE done INT DEFAULT FALSE; DECLARE interest1 DOUBLE; DECLARE lref VARCHAR(30); DECLARE cur1 CURSOR FOR --- if i run this select stat i ll get output--- select iterestrate,loanref from loan where loanref in (select loanaccno from month_dcb where month1=2 and year1=2012); DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE; OPEN cur1; START TRANSACTION; read_loop: LOOP FETCH cur1 INTO interest1, lref; IF done THEN LEAVE read_loop; END IF; -- here no updation ---0 rows affected update month_dcb set interest=interest1 where loanaccno=lref and year1=2012 and month1=2; END LOOP; COMMIT; CLOSE cur1; END;

  • mysqlakshath niranjan April 21, 2012 at 9:12 PM

    u r examples are excelent

  • Triggerspranav April 11, 2012 at 1:01 PM

    In this example "mysql> CREATE TRIGGER ins_trig BEFORE INSERT ON Emp -> FOR EACH ROW -> BEGIN -> UPDATE Employee SET Salary=Salary-300 WHERE Perks>500; -> END; -> // Query OK, 0 rows affected (0.01 sec) mysql> delimiter ; mysql> INSERT INTO Emp VALUES(9,'Rajesh','Delhi','Developer',15000,658);" what happens to 9th row which is being inserted?

  • plz correct the materialsachin Thapa May 19, 2012 at 10:23 AM

    in the above material you are using emp as insert table and employee as the dispay table. Please use only one name

  • experienceSIVA R August 3, 2012 at 10:04 PM

    it is very useful and easiest way to learn about trigger... really it is very useful to me.. thank you..

  • MYSQL TUTORIAL ON ANDROIDdopedroid August 11, 2012 at 10:33 PM

    Hi Buddies, Well now we have a handy reference of SQL in android market named SQL guru for free .......go through tweaks in the tips and walkthroughs given.....its pretty cool. https://play.google.com/store/apps/details?id=com.dopdroid.mysqlguru

  • MY SQL TRIGGERINGSourav Roychowdhury August 13, 2012 at 6:06 PM

    I am trying this program of setting salary 10000 if salary<=500 and 15000 if salary>500. when i am fireing the trigger it get executed but after updating the salary SET to 500.all the salary is setting to 500.that means trigger is not workinng.why this happend..please reply...

  • CongratulatePradeep Kumar Singh August 31, 2012 at 5:29 PM

    Hi, Congratulates to giving the so simple example the clear description.

  • to get triggers for my projectmahipatsinh mori September 8, 2012 at 9:34 AM

    i currentlly working on a banking system based on sql so plz recommend me triggers if any idea please...

  • complimentkamal September 30, 2012 at 11:47 AM

    oh really it is very nice and short note on trigger i like it................. a lot of thanx.

  • PL/SQLmallikharjunarao October 4, 2012 at 9:51 AM


  • PHPSarfraz Ali December 12, 2012 at 5:51 PM

    this is very useful tutorial,specially for new developer.. i glad to see these tutorial on MYSQL thanks for that

  • oraclemunna October 23, 2012 at 5:06 PM

    how to find 2nd largest salary or element in oracle.

  • not satisfiedpriya January 3, 2013 at 4:24 PM

    not up to the level

  • TriggersVaruna October 25, 2013 at 4:55 PM

    Not understand

  • Hellozekria December 21, 2013 at 1:31 PM

    I need some information about Tirgger (SQL) if it is possible send as information about that thanks you

  • solve the problem of time stamp triggersPiyush Shrivastava January 6, 2014 at 5:14 PM

    If we want to allow trigger for update or store TimeIn an TimeOut in employees table to calculate total working hours of an employee.

  • about triggerDEEPAK NEHE November 29, 2011 at 3:15 PM

    siri want moreinformation on trigeer with some more example of trigger

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