Question

I have 2 tables like so:

JOBS table

Jobcode    UserId    Status
101        130       R
102        139       D

USERS table

UserId    Email
130       [e-mail]

I want to create a trigger on insert and update that sends an email to my stored procedure:

EXEC dbo.SendMyEmail @email, @jobcode;

when the jobcode is inserted as ‘D’ or updated to ‘D’.

Answer 1

I’m not sure about data types etc but this should at least put you on the right track.
Hope it helps…

CREATE TRIGGER SendEmailOnStatusD

ON JOBS

-- trigger is fired when an update is made for the table
FOR UPDATE --You can add the same for INSERT

AS

    -- holds the UserID so we know which Customer was updated
    DECLARE @UserID int
    DECLARE @JobCode int

    SELECT @UserID = UserId, @JobCode = JobCode 
    FROM INSERTED WHERE [Status] = 'D' --If you want the old value before the update, use 'deleted' table instead of 'inserted' table

    IF (@UserID IS NOT NULL)
    BEGIN

        -- holds the email
        DECLARE @email varchar(250)

        SELECT @email = Email FROM USERS WHERE UserId = @UserID

        EXEC SendMyEmail (@email, @jobcode);

    END

GO

EDIT:

Above code does not handle multiple updates, so for better practice see below option

CREATE TRIGGER SendEmailOnStatusD ON JOBS

-- trigger is fired when an update is made for the table
FOR UPDATE --You can add the same for INSERT

AS

    DECLARE @Updates table(UserID int, JobCode int, Email varchar(250))

    INSERT INTO @Updates (UserID, JobCode, Email)
    SELECT i.UserID, i.JobCode, u.Email
    FROM INSERTED i
        JOIN USERS u ON i.UserID = u.UserID
    WHERE [Status] = 'D'

    DECLARE @UserID int
    DECLARE @JobCode int
    DECLARE @Email varchar(250)

    WHILE EXISTS(SELECT * FROM @Updates)
    BEGIN

        SELECT TOP 1
            @UserID = UserID,
            @Email = Email, 
            @JobCode = JobCode
        FROM @Updates WHERE UserID = @UserID

        EXEC SendMyEmail (@email, @jobcode);

        DELETE FROM @Updates
        WHERE UserID = @UserID

    END

GO

Additionally, as discussed in the comments, sending emails from a trigger is also not the best, but as this is what the question asks for it has been included. I would recommend alternative options for sending emails such as a queue which has been mentioned in other answers.