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Triggers Examples


Triggers Examples

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tochaturvedi-908256
tochaturvedi-908256
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Hi, Can any one send me the simple examples of using Instead of Trigger and After Trigger with Northwind database tables.

I want to create the triggers and execute them.
GilaMonster
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What are you trying to do with triggers?

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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tochaturvedi-908256
tochaturvedi-908256
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The trigger should insert records into tables.
I need only general examples.
Chandra Sekhara Vyas Dhara
Chandra Sekhara Vyas Dhara
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Check the following link

http://www.sqlservercentral.com/articles/Triggers/64214/



GilaMonster
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tochaturvedi (10/14/2008)
The trigger should insert records into tables.
I need only general examples.


CREATE TRIGGER trg_SomeInsert ON SOMETABLE
AFTER INSERT
AS
Insert into someothertable
Select somecolumn from inserted
GO

Does that help at all?

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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tochaturvedi-908256
tochaturvedi-908256
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Hi Gail,
Thanks for the reply.

I know that the above trigger will fire after insert action to the sometable and insert the records to someothertable.

You used the statement
Select somecolumn from inserted.

What is this inserted? Can i use the sometable inplace of inserted?
GilaMonster
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tochaturvedi (10/14/2008)
Hi Gail,
Thanks for the reply.

I know that the above trigger will fire after insert action to the sometable and insert the records to someothertable.


Just the one column.

You used the statement
Select somecolumn from inserted.

What is this inserted? Can i use the sometable inplace of inserted?


inserted and deleted are pseudo tables visible only within triggers. The inserted table will contain the rows affected by an insert or the new values of rows affected by an update. The deleted table contains rows affected by the delete or the old values of rows affected by an update.

You can use sometable, but then you'll get all the rows in that table. With inserted, you just get the rows that were inserted by the statement that fired the trigger.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


MarlonRibunal
MarlonRibunal
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I have posted something about this on my blog. Please follow link below:

http://dbalink.wordpress.com/2008/06/20/how-to-sql-server-trigger-101/

Marlon Ribunal
http://marlonribunal.com
Twitter @MarlonRibunal
ganesh.khuspe_v
ganesh.khuspe_v
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Hi all,
following is my trigger:

CREATE TRIGGER trigger1 ON Table1 after Update AS
begin
INSERT INTO table2
SELECT * from inserted
end


in above Query i want to add record from inserted table to table2 which is on another Database2.
and Table1 is in Database1.
After Updating Database1.Table1 trigger should get fire and record get inserted into Database2.Table2.
How can we do this????
twin.devil
twin.devil
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ganesh.khuspe_v (4/2/2014)
Hi all,
following is my trigger:

CREATE TRIGGER trigger1 ON Table1 after Update AS
begin
INSERT INTO table2
SELECT * from inserted
end


in above Query i want to add record from inserted table to table2 which is on another Database2.
and Table1 is in Database1.
After Updating Database1.Table1 trigger should get fire and record get inserted into Database2.Table2.
How can we do this????


you need to do the following



CREATE TRIGGER trigger1 ON Table1 after Update AS
begin
INSERT INTO [Database2].[schema].table2(ID, Name) ---- this is required otherwise will get error.
SELECT ID, Name
from inserted
end



and table2 must exists in the Database2 on the same sql server.

hope it helps
Go


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