Solved problems with Column.all doctest
Solved problems with Column.all doctest

Signed-off-by: Christian Tremblay <31ac1ca2e4859489ad6997067c1b3a4264642859@servisys.com>

RaoUmer/db.py,yhat/db.py,ricket1978/db.py,Cophy08/db.py,ricket1978/db.py,Cophy08/db.py,ashhher3/db.py,ashhher3/db.py,yhat/db.py,RaoUmer/db.py