How do you obtain SEQ_ID of a collection based on a SQL QUERY

Question

I don't know if my brain is not working or what, but how can I access the seq_id of a collection that I display as a SQL Query? I have this SQL Query:
select
htmldb_item.checkbox(1,b.asset_id) " ",
htmldb_item.select_list_from_lov(2,
'SHARE-UNRESTRICTED','LOV_RESERVATION_MODE',null,'YES') "mode",
a.seq_id,
b.asset_no,
b.device_name,
b.device_name_attached_to
from
htmldb_collections a,
asset_report_vw b
where
a.collection_name = 'CART'
and a.c001 = b.asset_id
The user can select the reservation mode from the select list for the Mode field and hit a button to update the cart. I have reviewed documentation and the Collections Showcase demo that showed how to do this with form items, but not from a report. I can't figure out how to get the seq_id to pass to the HTMLDB_COLLECTION.UPDATE_MEMBER_ATTRIBUTE procedure. I tried to create a hidden region item called P9_SEQID but I can't figure out how to set it to the seq_id returned from a query. Using #SEQ_ID# syntax doesn't work.

Answer 1

I am including the seq_id in my SQL Query report. The sticky point was how to reference the seq_id in an AFTER SUBMIT process to update the collection returned by the SQL Query when the user hit the Apply Changes button (they can edit one of the fields).
So, I assume then this is how I need to do it. I thought there might be a more efficient way to do it by somehow referencing the seq_id column in the SQL Query report instead of having to requery to get the seq id for each row in the SQL Query:
-- 'update_cart' AFTER SUBMIT process
DECLARE
v_seqid number := null;
BEGIN
FOR I in 1..HTMLDB_APPLICATION.G_F02.COUNT LOOP
select x.seq_id into v_seqid from htmldb_collections x
where x.collection_name = 'CART'
and c001 = htmldb_application.g_f01(i);
HTMLDB_COLLECTION.UPDATE_MEMBER_ATTRIBUTE(
p_collection_name => 'CART',
p_seq => v_seq_id
p_attr_number => 2,
p_attr_value => htmldb_application.g_f02(i));
END LOOP;
END;