fix bug where columns from a nonvisible table could contribute suggestions when a a query references an unqualifed, visible table of the same name
fix bug where columns from a nonvisible table could contribute suggestions when a a query references an unqualifed, visible table of the same name

koljonen/pgcli,zhiyuanshi/pgcli,yx91490/pgcli,n-someya/pgcli,thedrow/pgcli,dbcli/vcli,bitemyapp/pgcli,johshoff/pgcli,koljonen/pgcli,TamasNo1/pgcli,MattOates/pgcli,j-bennet/pgcli,thedrow/pgcli,suzukaze/pgcli,lk1ngaa7/pgcli,joewalnes/pgcli,dbcli/pgcli,w4ngyi/pgcli,darikg/pgcli,lk1ngaa7/pgcli,TamasNo1/pgcli,d33tah/pgcli,nosun/pgcli,suzukaze/pgcli,bitmonk/pgcli,w4ngyi/pgcli,joewalnes/pgcli,johshoff/pgcli,nosun/pgcli,janusnic/pgcli,j-bennet/pgcli,bitemyapp/pgcli,janusnic/pgcli,zhiyuanshi/pgcli,MattOates/pgcli,d33tah/pgcli,darikg/pgcli,dbcli/pgcli,n-someya/pgcli,yx91490/pgcli,bitmonk/pgcli,dbcli/vcli