Odd error in complex query (7.2): Sub-SELECT uses un-GROUPed...

This is using an almost up-to-date CVS version.

Sorry for the convoluted example:
   Create table t1(n text, f1 int, f2 int);   create table g1(n text, t1n text);   create table s1(k1 text, f1a int,
f1bint, f2 int, x int, d timestamp);
 
   create view v1 as select k1, d, (select g1.n from g1, t1 where g1.t1n=t1.n and t1.f1 = s1.f1a and t1.f2 =
s1.f2 limit 1) as a, (select g1.n from g1, t1 where g1.t1n=t1.n and t1.f1 = s1.f1b and t1.f2 =
s1.f2 limit 1) as b,x   from       s1   ;
   explain select coalesce(a, b, 'other') as name, k1, sum(x) as tot      from v1 where         d>'28-oct-2001 12:00'
andd<current_timestamp          group by 1,2 order by tot desc limit 40;   ERROR:  Sub-SELECT uses un-GROUPed attribute
s1.f2from outer query
 

Maybe I am asking too much of views?


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