Unable to perform delete on View SQL Server 2005

Question

I am unable to perform a delete on a View. Everything worked fine on the individual tables.

EDIT1: Added Trigger

CREATE TRIGGER myTrigger
ON [ViewName]
I         


        

Answer 1

Okay, let's imagine one instance where this error will occur (since you haven't shown your view definition).

Let's assume we have a view:

CREATE VIEW dbo.V1
with schemabinding
as
    select 'T1' as TabName,T1ID as ID,ImportantDate from dbo.T1
    union all
    select 'T2',T2ID,ImportantDate from dbo.T2

is we now attempt:

DELETE from dbo.V1 where ImportantDate < DATEADD(day,-90,CURRENT_TIMESTAMP)

we'll get the error you've shown (or similar). So what we need is a trigger:

CREATE TRIGGER T_V1_D
on dbo.V1
instead of delete
as
    set nocount on
    delete from dbo.T1 where T1ID in (select ID from deleted where TabName = 'T1')
    delete from dbo.T2 where T2ID in (select ID from deleted where TabName = 'T2')

This trigger gets considerably more complex to write if there's no easy way to correlate rows from the deleted psuedo-table with which rows need to be deleted from each base table.