Create the sync migration for prepared_at_created_at index creation
What does this MR do and why?
Create the sync migration for prepared_at_created_at index creation
Original MR: !127737 (merged)
Related issue: #419918 (closed)
Current Indexes for merge_request table: https://console.postgres.ai/gitlab/gitlab-production-tunnel-pg12/sessions/22198/commands/71741
Edited by Marc Shaw