Would you run this data backfill?

Situation

An AI-generated migration backfills a new `notification_preferences` column for all users.

Environment

Production Postgres with 12M rows in the users table and active sign-up traffic.

Select suspicious lines in the terminal to flag them before submitting your verdict.

pending review

BEGIN;

UPDATE users
SET notification_preferences = '{"email": true, 
"push": false}'
WHERE notification_preferences IS NULL;

CREATE INDEX idx_users_notification_prefs
ON users USING GIN (notification_preferences);

COMMIT;