Google 계정 로그인 연동 추가

db/migrations/071_users_google_oauth.sql

@@ -0,0 +1,14 @@
+ALTER TABLE users
+  ADD COLUMN IF NOT EXISTS google_sub TEXT,
+  ADD COLUMN IF NOT EXISTS google_email TEXT NOT NULL DEFAULT '',
+  ADD COLUMN IF NOT EXISTS google_name TEXT NOT NULL DEFAULT '',
+  ADD COLUMN IF NOT EXISTS google_avatar_url TEXT NOT NULL DEFAULT '',
+  ADD COLUMN IF NOT EXISTS google_linked_at TIMESTAMPTZ;
+
+CREATE UNIQUE INDEX IF NOT EXISTS users_google_sub_unique_idx
+  ON users (google_sub)
+  WHERE google_sub IS NOT NULL;
+
+CREATE INDEX IF NOT EXISTS users_google_email_idx
+  ON users (google_email)
+  WHERE google_email <> '';