[React/Cloud Firestore] 복합 쿼리문(OR, AND) 코드 AND 구현 import { query, where } from "firebase/firestore"; const q1 = query(citiesRef, where("state", "==", "CO"), where("name", "==", "Denver")); const q2 = query(citiesRef, where("state", "==", "CA"), where("population", " Back-End/Firebase 2022.01.19
