Fixes previous commit to avoid checking for sql_comparator on undefined
Fixes previous commit to avoid checking for sql_comparator on undefined

kolonse/node-orm2,benkitzelman/node-orm2,mariamjpinto/node-orm2,ScoutGroup/onionrm,locomote/node-orm2,benkitzelman/node-orm2,pskucherov/node-orm2,jtrinc/node-orm2,kolonse/node-orm2,kolonse/node-orm2,benkitzelman/node-orm2,kapouer/node-orm2,dresende/node-orm2,kapouer/node-orm2,kapouer/node-orm2,stueynz/node-orm2,hallta/node-orm2