CREATE TABLE [dbo].[al_user_ticket_impersonate]
(
[act_ticket_id] [binary] (16) NOT NULL,
[imp_ticket_id] [binary] (16) NOT NULL,
[last_update_user] [nvarchar] (255) COLLATE SQL_Latin1_General_CP1_CS_AS NULL,
[last_update_date] [int] NULL CONSTRAINT [DF__al_user_t__last___17770928] DEFAULT ('0'),
[version_number] [int] NULL CONSTRAINT [DF__al_user_t__versi__186B2D61] DEFAULT ('0')
) ON [PRIMARY]

GO
CREATE TRIGGER al_d_user_tkt_imp
ON al_user_ticket_impersonate
INSTEAD OF DELETE
AS
    DECLARE @imp_ticket_id BINARY(16)
    DECLARE @act_ticket_id BINARY(16)

    SELECT @imp_ticket_id = imp_ticket_id, @act_ticket_id = act_ticket_id
    FROM DELETED

    /*  delete al_user_ticket record  */
    DELETE FROM al_user_ticket_impersonate WHERE act_ticket_id = @act_ticket_id
    DELETE FROM al_user_ticket WHERE ticket_id = @imp_ticket_id
GO
ALTER TABLE [dbo].[al_user_ticket_impersonate] ADD CONSTRAINT [pk_usr_tkt_imp_act] PRIMARY KEY CLUSTERED ([act_ticket_id]) ON [PRIMARY]
GO
ALTER TABLE [dbo].[al_user_ticket_impersonate] ADD CONSTRAINT [FK_USR_TKT_IMP_ACT] FOREIGN KEY ([act_ticket_id]) REFERENCES [dbo].[al_user_ticket] ([ticket_id])
GO
ALTER TABLE [dbo].[al_user_ticket_impersonate] ADD CONSTRAINT [FK_USR_TKT_IMP_IMP] FOREIGN KEY ([imp_ticket_id]) REFERENCES [dbo].[al_user_ticket] ([ticket_id])
GO