I have a trigger that updates multiple columns in a table for rows inserted into another table.
A record inserted into the fuelTransactionInfo column, updates a column in fuelTransactions, based on the "info code", finding the correct row using fuelTransactionId. I'm just denormalizing some data for easier reporting.
The rows can be inserted into the fuelTransactionInfo column with multiple values. E.g.,
INSERT INTO fuelTransactionInfo
(...cols)
VALUES
(...values),
(...values),
(...values);
My issue is that only the first set of values is being used in the trigger. I understand that triggers are fired on the statement, not the rows, and I believe the trigger code accounts for that. However, it's simply not working.
Here is my trigger code:
ALTER TRIGGER [dbo].[fuelTransactionInfoDev_DenormalizeFuelTransactions]
ON [ERPDev].[dbo].[fuelTransactionInfo]
AFTER INSERT
AS
BEGIN
SET NOCOUNT ON
UPDATE t SET
t.employeeNumber = CASE
WHEN fuelInfoCodes.efsCode = 'DRID' THEN
inserted.value
ELSE t.employeeNumber
END,
t.unitNumber = CASE
WHEN fuelInfoCodes.efsCode = 'UNIT' THEN
inserted.value
ELSE t.unitNumber
END,
t.contractId = CASE
WHEN fuelInfoCodes.efsCode = 'CNTN' THEN
(SELECT c.id
FROM pinContract p
JOIN contracts c
ON c.contractNumber = p.ContractNumber
WHERE pin = inserted.value)
ELSE t.contractId
END,
t.contract = CASE
WHEN fuelInfoCodes.efsCode = 'CNTN' THEN
(SELECT c.contractNumber
FROM pinContract p
JOIN contracts c
ON c.contractNumber = p.ContractNumber
WHERE pin = inserted.value)
ELSE t.contract
END,
t.driverName = CASE
WHEN fuelInfoCodes.efsCode = 'NAME' THEN
inserted.value
ELSE t.driverName
END,
t.subFleet = CASE
WHEN fuelInfoCodes.efsCode = 'SSUB' THEN
inserted.value
ELSE t.subFleet
END
FROM fuelTransactions t
JOIN inserted
ON inserted.fuelTransactionid = t.id
JOIN fuelInfoCodes
ON fuelInfoCodes.id = inserted.fuelInfoCodeId;
END
I've done a little bit of testing by adding the following statement to the trigger:
SELECT * FROM INSERTED INTO insertedTest
I see all the expected rows in the insertedTest table. I've tested the UPDATE statement by converting it into an equivalent select (based on the insertedTest table, instead of "inserted"), and all the joins are good.
Only the column in the 'UNIT' case is actually updated in fuelTransactions, which happens to be the first row in every single insert firing the trigger.
What am I doing wrong? Let me know if you need more info.