github.com/postmates/migrate@v3.0.2-0.20200730201548-1a6ead3e680d+incompatible/database/postgres/examples/migrations/1285849751_add_index_on_user_emails.up.sql (about) 1 CREATE UNIQUE INDEX CONCURRENTLY users_email_index ON users (email); 2 3 -- Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean sed interdum velit, tristique iaculis justo. Pellentesque ut porttitor dolor. Donec sit amet pharetra elit. Cras vel ligula ex. Phasellus posuere.