document 'as' being optional in from clause
document 'as' being optional in from clause

hsr-ba-fs15-dat/opendatahub,hsr-ba-fs15-dat/opendatahub,hsr-ba-fs15-dat/opendatahub,hsr-ba-fs15-dat/opendatahub,hsr-ba-fs15-dat/opendatahub