From: | Fernando Nasser <fnasser(at)redhat(dot)com> |
---|---|
To: | Dmitry Tkach <dmitry(at)openratings(dot)com> |
Cc: | Darin Ohashi <DOhashi(at)maplesoft(dot)com>, 'Oliver Jowett' <oliver(at)opencloud(dot)com>, Kim Ho <kho(at)redhat(dot)com>, Barry Lind <blind(at)xythos(dot)com>, pgsql-jdbc-list <pgsql-jdbc(at)postgresql(dot)org>, Dave Cramer <Dave(at)micro-automation(dot)net> |
Subject: | Re: IN clauses via setObject(Collection) [Was: Re: Prepare |
Date: | 2003-07-21 21:13:30 |
Message-ID: | 3F1C577A.2050009@redhat.com |
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Thread: | |
Lists: | pgsql-jdbc |
Just for reference, neither DB2 nor Oracle support passing the full list of
values as a single '?' parameter. In both cases you have to specify several ?
parameters (or :host variables) for each of the expected values.
Although I find this an annoying limitation, the fact remains that no
significant DBMS does what is being asked here.
PostgreSQL currently does not even accept '?' in the list. I have asked about
the possibility to support something in there. But even if the backend decides
to accept the full list it would be a PostgreSQL-only feature/enhancement and
not portable.
I feel very comfortable implementing standards but not at extending them. If
one day the standard body decides to implement it in a way different from the
way you did you end up with backward compatibility problems. Not to mention
that you end up tricking people into using some non-standard exception and
preventing them to use another DBMS. Although I see no reason to use anything
but PostgreSQL, this looks somewhat like M$ tactics ;-)
--
Fernando Nasser
Red Hat - Toronto E-Mail: fnasser(at)redhat(dot)com
2323 Yonge Street, Suite #300
Toronto, Ontario M4P 2C9
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