How to avoid duplicate rows after insert into new table?- SQL












1















I have a trigger in my jobPost table that fires after an update to column jobStatus & emailTeacher. The trigger inserts all rows that match emailTeacher and insert into a new table called jobRequests.



My problem is - When a row is updated, all rows with that SAME emailTeacher inserts into the new table. I would like to only INSERT the affected row that has been updated. I have attached sql below. Thank you. Any help appreciated.



  CREATE DEFINER=`root`@`localhost` TRIGGER 
trg_jobPost_after_update
AFTER UPDATE ON jobPost
FOR EACH ROW
BEGIN

-- Check if jobStatus is Updated (then only we Insert)
IF ( OLD.jobStatus <> NEW.jobStatus AND OLD.emailTeacher <> NEW.emailTeacher) THEN
INSERT INTO jobRequest (userID, name, email, phoneNo,
location, lat, lng, jobID, title, level,
dateFrom, dateTo, description,
jobStatus, emailTeacher, nameTeacher,
locationTeacher, phoneNoTeacher, cv,
gardavetting, linkedin)
SELECT
jobPost.userID
, jobPost.name
, jobPost.email
, jobPost.phoneNo
, jobPost.location
, jobPost.lat
, jobPost.lng
, jobPost.jobID
, jobPost.title
, jobPost.level
, jobPost.dateFrom
, jobPost.dateTo
, jobPost.description
, NEW.jobStatus
, NEW.emailTeacher
, users.nameTeacher
, users.locationTeacher
, users.phoneNoTeacher
, users.cv
, users.gardavetting
, users.linkedin
FROM jobPost
JOIN users ON users.emailTeacher = jobPost.emailTeacher
WHERE jobPost.emailTeacher = NEW.emailTeacher;

END IF;


END



Duplicate of entry










share|improve this question


















  • 1





    Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

    – aynber
    Nov 21 '18 at 16:39











  • Column unique in the inserted table or the table that is being updated. Thanks!

    – Adam Mc Menamin
    Nov 21 '18 at 16:44
















1















I have a trigger in my jobPost table that fires after an update to column jobStatus & emailTeacher. The trigger inserts all rows that match emailTeacher and insert into a new table called jobRequests.



My problem is - When a row is updated, all rows with that SAME emailTeacher inserts into the new table. I would like to only INSERT the affected row that has been updated. I have attached sql below. Thank you. Any help appreciated.



  CREATE DEFINER=`root`@`localhost` TRIGGER 
trg_jobPost_after_update
AFTER UPDATE ON jobPost
FOR EACH ROW
BEGIN

-- Check if jobStatus is Updated (then only we Insert)
IF ( OLD.jobStatus <> NEW.jobStatus AND OLD.emailTeacher <> NEW.emailTeacher) THEN
INSERT INTO jobRequest (userID, name, email, phoneNo,
location, lat, lng, jobID, title, level,
dateFrom, dateTo, description,
jobStatus, emailTeacher, nameTeacher,
locationTeacher, phoneNoTeacher, cv,
gardavetting, linkedin)
SELECT
jobPost.userID
, jobPost.name
, jobPost.email
, jobPost.phoneNo
, jobPost.location
, jobPost.lat
, jobPost.lng
, jobPost.jobID
, jobPost.title
, jobPost.level
, jobPost.dateFrom
, jobPost.dateTo
, jobPost.description
, NEW.jobStatus
, NEW.emailTeacher
, users.nameTeacher
, users.locationTeacher
, users.phoneNoTeacher
, users.cv
, users.gardavetting
, users.linkedin
FROM jobPost
JOIN users ON users.emailTeacher = jobPost.emailTeacher
WHERE jobPost.emailTeacher = NEW.emailTeacher;

END IF;


END



Duplicate of entry










share|improve this question


















  • 1





    Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

    – aynber
    Nov 21 '18 at 16:39











  • Column unique in the inserted table or the table that is being updated. Thanks!

    – Adam Mc Menamin
    Nov 21 '18 at 16:44














1












1








1








I have a trigger in my jobPost table that fires after an update to column jobStatus & emailTeacher. The trigger inserts all rows that match emailTeacher and insert into a new table called jobRequests.



My problem is - When a row is updated, all rows with that SAME emailTeacher inserts into the new table. I would like to only INSERT the affected row that has been updated. I have attached sql below. Thank you. Any help appreciated.



  CREATE DEFINER=`root`@`localhost` TRIGGER 
trg_jobPost_after_update
AFTER UPDATE ON jobPost
FOR EACH ROW
BEGIN

-- Check if jobStatus is Updated (then only we Insert)
IF ( OLD.jobStatus <> NEW.jobStatus AND OLD.emailTeacher <> NEW.emailTeacher) THEN
INSERT INTO jobRequest (userID, name, email, phoneNo,
location, lat, lng, jobID, title, level,
dateFrom, dateTo, description,
jobStatus, emailTeacher, nameTeacher,
locationTeacher, phoneNoTeacher, cv,
gardavetting, linkedin)
SELECT
jobPost.userID
, jobPost.name
, jobPost.email
, jobPost.phoneNo
, jobPost.location
, jobPost.lat
, jobPost.lng
, jobPost.jobID
, jobPost.title
, jobPost.level
, jobPost.dateFrom
, jobPost.dateTo
, jobPost.description
, NEW.jobStatus
, NEW.emailTeacher
, users.nameTeacher
, users.locationTeacher
, users.phoneNoTeacher
, users.cv
, users.gardavetting
, users.linkedin
FROM jobPost
JOIN users ON users.emailTeacher = jobPost.emailTeacher
WHERE jobPost.emailTeacher = NEW.emailTeacher;

END IF;


END



Duplicate of entry










share|improve this question














I have a trigger in my jobPost table that fires after an update to column jobStatus & emailTeacher. The trigger inserts all rows that match emailTeacher and insert into a new table called jobRequests.



My problem is - When a row is updated, all rows with that SAME emailTeacher inserts into the new table. I would like to only INSERT the affected row that has been updated. I have attached sql below. Thank you. Any help appreciated.



  CREATE DEFINER=`root`@`localhost` TRIGGER 
trg_jobPost_after_update
AFTER UPDATE ON jobPost
FOR EACH ROW
BEGIN

-- Check if jobStatus is Updated (then only we Insert)
IF ( OLD.jobStatus <> NEW.jobStatus AND OLD.emailTeacher <> NEW.emailTeacher) THEN
INSERT INTO jobRequest (userID, name, email, phoneNo,
location, lat, lng, jobID, title, level,
dateFrom, dateTo, description,
jobStatus, emailTeacher, nameTeacher,
locationTeacher, phoneNoTeacher, cv,
gardavetting, linkedin)
SELECT
jobPost.userID
, jobPost.name
, jobPost.email
, jobPost.phoneNo
, jobPost.location
, jobPost.lat
, jobPost.lng
, jobPost.jobID
, jobPost.title
, jobPost.level
, jobPost.dateFrom
, jobPost.dateTo
, jobPost.description
, NEW.jobStatus
, NEW.emailTeacher
, users.nameTeacher
, users.locationTeacher
, users.phoneNoTeacher
, users.cv
, users.gardavetting
, users.linkedin
FROM jobPost
JOIN users ON users.emailTeacher = jobPost.emailTeacher
WHERE jobPost.emailTeacher = NEW.emailTeacher;

END IF;


END



Duplicate of entry







php mysql sql triggers






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asked Nov 21 '18 at 16:36









Adam Mc MenaminAdam Mc Menamin

174




174








  • 1





    Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

    – aynber
    Nov 21 '18 at 16:39











  • Column unique in the inserted table or the table that is being updated. Thanks!

    – Adam Mc Menamin
    Nov 21 '18 at 16:44














  • 1





    Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

    – aynber
    Nov 21 '18 at 16:39











  • Column unique in the inserted table or the table that is being updated. Thanks!

    – Adam Mc Menamin
    Nov 21 '18 at 16:44








1




1





Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

– aynber
Nov 21 '18 at 16:39





Make one column unique, and do INSERT ... ON DUPLICATE KEY UPDATE

– aynber
Nov 21 '18 at 16:39













Column unique in the inserted table or the table that is being updated. Thanks!

– Adam Mc Menamin
Nov 21 '18 at 16:44





Column unique in the inserted table or the table that is being updated. Thanks!

– Adam Mc Menamin
Nov 21 '18 at 16:44












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