Обсуждение: RE: [SQL] select nextval. . .

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RE: [SQL] select nextval. . .

От
"Jackson, DeJuan"
Дата:
> i am connecting to a postgres 6.4.2 database with msaccess97.  in that 
> postgres database i have a sequence defined.  in access i have a form,
> with 
> only one textbox -- when i open that form i'd like to populate that
> textbox 
> with the next value in that sequence.  i can get the next value from psql 
> (select nextval('sequencename');), but i can't seem to figure out how to 
> get that nextval from within access97 into a control on a form.  i can 
> design a pass-through query that inserts the nextval into a database, but 
> that isn't what i want to do (it also exposes some risk of non-uniqueness 
> that the sequence helps to ensure).  got any ideas??
> 
> jt
> 
You're going to have to implement this all on your own.  As far as I know
Access doesn't have a way to start a transaction with a form, therefore
sequences lose a lot of their benefits.

A viable alternative might be to grab the generated sequence number after
the insert, and display it then.-DEJ