Tom Lane wrote: > "Dave Page" <[EMAIL PROTECTED]> writes: > > Well, what would constitute a complete spec? I think I've told the group > > what I would like to be able to do, what unanswered questions can I > > (hopefully :-) ) answer? > > I'm still unclear on exactly what your needs are. In the first place, > are you expecting to obtain data from arbitrary SELECT statements, or > only from statements of the form "SELECT * FROM single_table"? You've > also been confusing as to whether you want transparency of views (ie, > does a select from a view return data about the view's nominal columns > or about the underlying base table columns?). What about cases > involving aggregates or grouping --- there may be simple Vars in the > target list, but they can hardly be thought to represent updatable values.
These questions can't possibly be unique to PG -- other database vendors must have answered these questions for their implementations of ODBC/JDBC too, or their databases would give ODBC and JDBC client authors the same kinds of trouble. So ... how have these questions been answered by other database vendors? The spec may be underspecified on these points, but since the entire purpose of ODBC and JDBC is to provide a database-independent framework for application authors to use, it follows that compatibility with other implementations is highly desirable. So doing more or less what other database vendors have done in response to these underspecified issues is probably a sensible course of action when there's no other obviously better answer. -- Kevin Brown [EMAIL PROTECTED] ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
