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Re: Access2000 & sequence as primary key in view : #DELETED

From: Arnaud Lesauvage <thewild(at)freesurf(dot)fr>
To: Tony Caduto <tony_caduto(at)amsoftwaredesign(dot)com>
Cc: pgsql-odbc(at)postgresql(dot)org
Subject: Re: Access2000 & sequence as primary key in view : #DELETED
Date: 2006-10-11 16:49:34
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Lists: pgsql-odbc
Tony Caduto a écrit :
> That's not the problem,  a sequence is just a integer generator for a 
> integer field/column that has a nextval function in the columns default 
> value.
> The view and the table don't know anything about the sequence other than 
> the reference to it in the columns default value.
> Sequences are completely independent of any view or table and a serial 
> type is not a real type since it simply places a nextval function call 
> in the columns default value(and some entries in the pg_depend table).

The fact is that we are talking about ODBC here.
The difference between a table and a view is that in the table one 
record as one value of the sequence, forever. With a linked view 
in access, if I sort the table or query it in anyway new sequence 
numbers are given to all the fields.

> Here is a example table that at one time always got the # deleted in 
> Access 97, then we modified it like so:
>   ...
> > we simply added a record id field to every table and made that the PK, 
> then to enforce the constraints we had before in the PK we created a 
> unique index.
> We have not had a problem with the # deleted entries showing up since we 
> did this to all the tables in Postgresql.
> When using ODBC ACCESS does use the PK in the PG tables and it only 
> works with a single integer value.  Maybe newer versions of Access 
> behave differently with ODBC linked tables but I kind of doubt it.

I know about all these problems with Access, and all my tables are 
configured in such a way that the #DELETED problem never arises.
The problem is with this view. (sorry to insist, but it really 
does matter here that the linked table is a view)

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