I have just noticed that 7.3 and CVS tip reject a query that was accepted in earlier releases:
regression=# create table t1(f1 int, f2 int); CREATE TABLE regression=# create table t2(f2 int, f3 int); CREATE TABLE regression=# select t1.f1 from t1 join t2 on (t1.f2=t2.f2) group by f1; ERROR: Attribute t1.f1 must be GROUPed or used in an aggregate function
[...snip...]
In the plain inner-join case, there isn't any semantic difference between "f1" and "t1.f1", but does that mean we should treat them as the same grouping column? I'm not sure. Anyone want to try these cases on other DBMSes?
I did the above on MSSQL2000 -- it works with no error. I haven't been able to get at a development Oracle db, but I'll try to tomorrow.
Joe
---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ?
http://www.postgresql.org/docs/faqs/FAQ.html
