SQLException: invalid column name

Question

I created a view on a Oracle 8.0.5 database which joins three tables. One column of the view is built by subtracting the values of two table-columns by each other. On SQLPlus everything works fine, but when I run a SELECT-Statement over JDBC I got a SQLException: invalid column name. With WHERE-Clauses, which will not have any results the query also works under JDBC.
An example:
"select * from OpenOrderPos where OrderID = <myval>" will work when run under SQLPlus
but not under JDBC and when there should be results
Here is my code:
create View OpenOrderPos
(OrderID, PosNo, ArticleID, ArticleBez, ArtPrice, RestQuantity, Sum)
as
select O.OrderID_FK, Count(A.PosNo), Art.ArticleID, Art.ArtDescr,
Art.ArtPrice, O.Quantity - I.Quantity, (O.Quantity - I.Quantity) * Art.ArtPrice
from OrderPos O, InvoicePos I, Article Art
where O.OrderPosID = I.InvPosID and
O.ArticleID_FK = Art.ArticleID and
(O.Quantity - I.Quantity) > 0
Group by O.OrderID_FK, Art.ArticleID, Art.ArtDescr, Art.ArtPrice, O.Quantity - I.Quantity, (O.Qunatity - I.Quantity) * Art.ArtPrice;
Any ideas would be great!
Chris

Answer 1

I would also suggest you specify the column names in your SQL statement. If for no other reason than it is good programming practice. If you explicitly specify your columns instead of use * then you will not have to worry about an invalidated object should the view be changed at a later date. Considering the fact that JDBC makes all database statements dynamic, this is not an issue but once again, it is good programming practice.