I creating triggers for several tables. The triggers have same logic. I will want to use a common stored procedure. But I don't know how work with inserted and deleted table.
example:
SET @FiledId = (SELECT FiledId FROM inserted)
begin tran
update table with (serializable) set DateVersion = GETDATE()
where FiledId = @FiledId
if @@rowcount = 0
begin
insert table (FiledId) values (@FiledId)
end
commit tran
You can use a table valued parameter to store the inserted / deleted values from triggers, and pass it across to the proc. e.g., if all you need in your proc is the UNIQUE FileID's:
CREATE TYPE FileIds AS TABLE
(
FileId INT
);
-- Create the proc to use the type as a TVP
CREATE PROC commonProc(@FileIds AS FileIds READONLY)
AS
BEGIN
UPDATE at
SET at.DateVersion = CURRENT_TIMESTAMP
FROM ATable at
JOIN @FileIds fi
ON at.FileID = fi.FileID;
END
And then pass the inserted / deleted ids from the trigger, e.g.:
CREATE TRIGGER MyTrigger ON SomeTable FOR INSERT
AS
BEGIN
DECLARE @FileIds FileIDs;
INSERT INTO @FileIds(FileID)
SELECT DISTINCT FileID FROM INSERTED;
EXEC commonProc @FileIds;
END;
You can
select * into #Inserted from inserted
select * into #Deleted from deleted
and then
use these two temp tables in your stored proc
The tables inserted and deleted are only available inside the trigger. You can only use them in run-time. They will then contain the affected rows.
Also, your code might not work as expected if there is not exactly one row inserted.
insertedcan contain 0, 1, or multiple rows -SET @FiledId = (SELECT FiledId FROM inserted)is selecting a value from one of those rows and ignoring the others