Re: calculated identity field in views, again...
От | Keith Worthington |
---|---|
Тема | Re: calculated identity field in views, again... |
Дата | |
Msg-id | 4278AA8C.6050502@NarrowPathInc.com обсуждение исходный текст |
Ответ на | Re: calculated identity field in views, again... ("Zlatko Matic" <zlatko.matic1@sb.t-com.hr>) |
Список | pgsql-interfaces |
>> Zlatko Matic wrote: >> >>> I asked this question several weeks ago, but nobody proposed a >>> solution, so I am repeating the same question again... >>> I have an MS Access front-end for a database on PostgreSQL. >>> I could use pass-through queries as record sources for reports and it >>> works fine... >>> Unfortunately, MS Access doesn't allow pass-through queries to be >>> records sources for subforms. >>> Therefore I tried to base subforms on regular JET queries on linked >>> tables. It was too slow... >>> Then I tried to base subforms on DAO recordset code generated from >>> pass-through QueryDef objects. Although it worked, it was very >>> unstable... >>> >>> Now it seems to me that POstgreSQL views are the best solution, but >>> Access considers views as tables (!) and needs column with unique >>> values. >>> All those views are complicated queries on several tables, so I can't >>> use any table's column as primary key. I need a calculated column in >>> the view that Access will consider as primary key column. >>> In regular tables, I use bigserial field, but how can I create >>> calculated bigserial column in a view ? >>> >>> Thanks. >>> >>> ---------------------------(end of broadcast)--------------------------- >>> TIP 9: the planner will ignore your desire to choose an index scan if >>> your >>> joining column's datatypes do not match >>> >>> >> >> Another option is to toss the MS Access altogether and program the >> front end entirely in VB. That is what we did. >> >> -- >> Kind Regards, >> Keith >> > Zlatko Matic wrote: > You mean VB.NET ? Actually we wrote our interface using VB6. -- Kind Regards, Keith
В списке pgsql-interfaces по дате отправления: