Fixes postgres driver's create-view-as to not fail
Fixes postgres driver's create-view-as to not fail

when something already exists

HazyResearch/deepdive,HazyResearch/deepdive,shahin/deepdive,sky-xu/deepdive,HazyResearch/deepdive,shahin/deepdive,sky-xu/deepdive,HazyResearch/deepdive