updatable views and MS-Access 2K
От | lutz.willerding@gmail.com (Lutz Willerding) |
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Тема | updatable views and MS-Access 2K |
Дата | |
Msg-id | eb4b01ed.0411051544.3b33158c@posting.google.com обсуждение исходный текст |
Список | pgsql-odbc |
how do you do it? looking for a solution, I found this thread just some lines below: update rules + views + .... which suggests using ctid, causing problems with views using more than 1 table. for views using 2 tables, I found the following partial solution: 1: updatable views need a 'catch all rule'; docs indicate to do something like: 'create or replace rule UpdRuleCatchAll as on update myview do instead nothing;' It looks like, this 'nothing' makes access moan about 'no record'. 'do nothing' replaced by: 'do select * from myview where <YourPrimaryKeySpecHere>' returns 1(!) record. -> no 'record missing' any more. 2: do specific update rules with '...where OLD.YourKey is NULL or OLD.yourkey <> NEW.yourkey (update or insert the table involved) where (use exactly the same keys as you will give access as the primary key(s) when importing the view as a linked table) didn't try to do insert or delete rules yet; using a form, I just call a stored procedure on a 'OnClick'-Event that is designed to do what is needed, and the .Requery of the matching MS-Access-Object. This works _without_ including ctid in the views definition _and_ it works with 2 tables involved. (just trying to get the third)
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