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Message Posted: Fri, 25 Apr 2003 @ 19:25:44 GMT


     
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Subj:   Re: Idea for the implementation of a view needed
 
From:   ulrich arndt

Are you going to qualifing the PI always when you access the view?

If yes - if you cust_id 123 in table customer_restricted you will get NO row back in case you submit

sel * from member_activity_restricted
where cust_id = 123
;

as 123 is mapped to 0 and is therefore not part of the result set.

Is this what you want?

If yes -
try
REPLACE VIEW member_activity_restricted AS
SELECT
 a.activity,
 a.cust_id
FROM
member_activity a
LEFT JOIN
customer_restricted b
ON a.cust_id = b.cust_id
where b.cust_id is null
;

This should return no row for 123 but this fast.

If there was a NO answer before give us some more details.

Ulrich



     
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