When doing bz_alter_column, if 
When doing bz_alter_column, if 

https://bugzilla.mozilla.org/show_bug.cgi?id=573441
talatdayyan/bugzilla,oyang/bugzilla,dylanwh/bugzilla,dylanwh/bugzilla,dklawren/bugzilla,oyang/bugzilla,dylanwh/bugzilla,ikpcdoctor/git-clone---branch-release-5.0-stable-https-git.mozilla.org-bugzilla-bugzilla-,GNOME/bugzilla-gnome-org-upstream,bugzilla/bugzilla,edmorley/bugzilla,talatdayyan/bugzilla,GNOME/bugzilla-gnome-org-upstream,edmorley/bugzilla,bugzilla/bugzilla,ikpcdoctor/git-clone---branch-release-5.0-stable-https-git.mozilla.org-bugzilla-bugzilla-,oyang/bugzilla,oyang/bugzilla,edmorley/bugzilla,dklawren/bugzilla,ikpcdoctor/git-clone---branch-release-5.0-stable-https-git.mozilla.org-bugzilla-bugzilla-,talatdayyan/bugzilla,dklawren/bugzilla,bugzilla/bugzilla,dylanwh/bugzilla,dklawren/bugzilla,GNOME/bugzilla-gnome-org-upstream,ikpcdoctor/git-clone---branch-release-5.0-stable-https-git.mozilla.org-bugzilla-bugzilla-,edmorley/bugzilla,oyang/bugzilla,talatdayyan/bugzilla,dylanwh/bugzilla,dklawren/bugzilla,talatdayyan/bugzilla,GNOME/bugzilla-gnome-org-upstream,bugzilla/bugzilla,GNOME/bugzilla-gnome-org-upstream,edmorley/bugzilla,ikpcdoctor/git-clone---branch-release-5.0-stable-https-git.mozilla.org-bugzilla-bugzilla-