How to influence the planner

[Richard Ray <rray(at)mstc(dot)state(dot)ms(dot)us>]

I have a table, t1,  with about 12 million rows
The column foo is unique and indexed
The column bar is not unique and is indexed
"select * from t1 where length(bar) = 0;" runs about 2 minutes
"select * from t1 where length(bar) = 0 order by foo ;" ran until I
stopped it after about 20 minutes
My simple solution is "select * into t2 from t1 where length(bar) = 0;"
and "select * from t2 order by foo ;"
Is there a way to make "select * from t1 where length(bar) = 0 order by foo ;"
or something similar work

Thanks
Richard Ray