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trigger that will update one table when a record is updated in another


trigger that will update one table when a record is updated in another

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briancampbellmcad
briancampbellmcad
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I'm trying to write a trigger that will update one table [tblTransactions] when a record is updated in another [tblBulkPurchases].... am I on the right track here?

USE [TrackIT]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[trUpdateBulkPurchases]
ON [dbo].[tblTransactions]
AFTER UPDATE
AS
BEGIN
UPDATE tblBulkPurchases
(tblBulkPurchases.PO_Number,
tblBulkPurchases.Quantity,
tblBulkPurchases.Transaction_Number,
tblBulkPurchases.Quantity_Remaining,
tblBulkPurchases.Unit_Price,
tblBulkPurchases.Software_Description,
tblBulkPurchases.PO_Date,
tblBulkPurchases.PurchaseCostCenter,
tblBulkPurchases.HeatTicketNumber,
tblBulkPurchases.PurchaseAccount,
tblBulkPurchases.Transaction_Date,
tblBulkPurchases.Transaction_Type,
tblBulkPurchases.SoftwareShortName)
SELECT
INSERTED.PO_Number,
INSERTED.Quantity,
INSERTED.Transaction_Number,
INSERTED.Quantity,
INSERTED.Unit_Price,
INSERTED.Software_Description,
INSERTED.PO_Date,
INSERTED.PurchaseCostCenter,
INSERTED.HeatTicketNumber,
INSERTED.PurchaseAccount,
INSERTED.Transaction_Date,
INSERTED.Transaction_Type,
INSERTED.SoftwareShortName
FROM INSERTED
WHERE Transaction_Type = 'Bulk Purchase'
END
Lowell
Lowell
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doesn't look quite right to me.

It looks to me like you are missing a relationship between t he two tables.
maybe the PO_Number exists between the two table,s and you need to update WHERE PO_NUMBER = INSERTED.PO_Number AND Transaction_Type = 'Bulk Purchase' ?

Lowell
--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!
briancampbellmcad
briancampbellmcad
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Correct... do need to associate by PO = PO... thanks.... is the word INSERTED.____ appropriate to use?
Steve Jones
Steve Jones
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INSERTED.___ is fine.

I'd do this, but your way works:


UPDATE tblBulkPurchases
(tblBulkPurchases.PO_Number,
tblBulkPurchases.Quantity,
tblBulkPurchases.Transaction_Number,
tblBulkPurchases.Quantity_Remaining,
tblBulkPurchases.Unit_Price,
tblBulkPurchases.Software_Description,
tblBulkPurchases.PO_Date,
tblBulkPurchases.PurchaseCostCenter,
tblBulkPurchases.HeatTicketNumber,
tblBulkPurchases.PurchaseAccount,
tblBulkPurchases.Transaction_Date,
tblBulkPurchases.Transaction_Type,
tblBulkPurchases.SoftwareShortName)
SELECT
i.PO_Number,
i.Quantity,
i.Transaction_Number,
i.Quantity,
...
FROM INSERTED i
inner join tblBulkPurchases
on tblBulkPurchases.PO = i.po
WHERE Transaction_Type = 'Bulk Purchase'



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briancampbellmcad
briancampbellmcad
Mr or Mrs. 500
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Kinda like your way... but the compiler doesn't like where I've placed astericks:

USE [TrackIT]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[trUpdateBulkPurchases]
ON [dbo].[tblTransactions]
AFTER UPDATE
AS
BEGIN
UPDATE tblBulkPurchases
*(tblBulkPurchases.PO_Number,
tblBulkPurchases.Quantity,
tblBulkPurchases.Transaction_Number,
tblBulkPurchases.Quantity_Remaining,
tblBulkPurchases.Unit_Price,
tblBulkPurchases.Software_Description,
tblBulkPurchases.PO_Date,
tblBulkPurchases.PurchaseCostCenter,
tblBulkPurchases.HeatTicketNumber,
tblBulkPurchases.PurchaseAccount,
tblBulkPurchases.Transaction_Date,
tblBulkPurchases.Transaction_Type,
tblBulkPurchases.SoftwareShortName)
SELECT
i.PO_Number,
i.Quantity,
i.Transaction_Number,
i.Quantity,
i.Unit_Price,
i.Software_Description,
i.PO_Date,
i.PurchaseCostCenter,
i.HeatTicketNumber,
i.PurchaseAccount,
i.Transaction_Date,
i.Transaction_Type,
i.SoftwareShortName
FROM INSERTED i
inner join tblBulkPurchases
on tblBulkPurchases.Transaction_Number = i.Transaction_Number
WHERE Transaction_Type = 'Bulk Purchase' *
GO
Steve Jones
Steve Jones
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Sorry, wasn't reading well. The problem is that you have a malformed UPDATE statement.


CREATE TRIGGER [dbo].[trUpdateBulkPurchases]
ON [dbo].[tblTransactions]
AFTER UPDATE
AS
BEGIN
UPDATE tblBulkPurchases
set PO_Number = i.PO_Number
, Quantity = i.quantity
...
FROM INSERTED i
inner join tblBulkPurchases
on tblBulkPurchases.Transaction_Number = i.Transaction_Number
WHERE Transaction_Type = 'Bulk Purchase'
GO




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briancampbellmcad
briancampbellmcad
Mr or Mrs. 500
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Like this? (Still doesn't like near where the * is):

USE [TrackIT]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TRIGGER [dbo].[trUpdateBulkPurchases]
ON [dbo].[tblTransactions]
AFTER UPDATE
AS
BEGIN
UPDATE tblBulkPurchases
SET
PO_Number = i.PO_Number,
Quantity = i.Quantity,
Unit_Price = i.Unit_Price,
Software_Description = i.Software_Description,
PO_Date = i.PO_Date,
PurchaseCostCenter = i.PurchaseCostCenter,
HeatTicketNumber = i.HeatTicketNumber,
PurchaseAccount = i.PurchaseAccount,
Transaction_Date = i.Transaction_Date,
SoftwareShortName = i.SoftwareShortName
FROM INSERTED i
inner join tblBulkPurchases
on tblBulkPurchases.Transaction_Number = i.Transaction_Number
WHERE Transaction_Type = 'Bulk Purchase' *
GO
Steve Jones
Steve Jones
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What's the error? If it's an ambiguous column, you need to specify from which table (The base one or INSERTED) you are specifying in the WHERE clause.

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
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briancampbellmcad
briancampbellmcad
Mr or Mrs. 500
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Group: General Forum Members
Points: 511 Visits: 438
WHERE Transaction_Type = 'Bulk Purchase'

Msg 102, Level 15, State 1, Procedure trUpdateBulkPurchases, Line 21
Incorrect syntax near 'Bulk Purchase'.
toddasd
toddasd
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briancampbellmcad (1/14/2013)
Like this? (Still doesn't like near where the * is):
...
WHERE Transaction_Type = 'Bulk Purchase' *
GO


Yes, like that but no asterix. You won't be using an * here.

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