hi, Vadim,
(sorry, Vadim, I used "reply" to "vadim@krs.ru", but I mean
pgsql-general@postgreSQL.org )
I use postgresql as the backend of a website using cgi(in perl/DBI).
so,
>Note that if in any time only one application will update
>primary/foreign tables then you can forget all above, don't
>worry about RELEASE NOTES and be happy -:)
A) I can not be happy ;-(
>But if example above is case for you then:
>
>1. all applications should use BEGIN/END;
B) what does that mean for perl? or just limited to PL/pgSQL--
then, isn't BEGIN/END the common syntax in PL/pgSQL?
C) can you give me an outline of PL/pgSQL for 2. and 3. ?
>2. in first transaction (deleting/updating something in primary table)
> you have to execute LOCK _primary_table_ IN SHARE ROW EXCLUSIVE MODE
> _before_ execution of any update/delete statement for the
> primary table;
>3. in second transaction (inserting/updating something in foreign
> table) you have to execute LOCK _primary_table_ IN SHARE MODE
> _before_ execution of any insert/update statement for the
> foreign table.
>
D) I'm not sure yet ALL those can be handled by PS/pgSQL within the
postgresql? I do not need to handle all of them in perl through
dbi? If I do, how? and, can I just disable the concurrent
multiversion in V6.5?
Thanks!!!
Kai
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