atlas migrate diff --env local
cmpmig 0 diff.sql
-- atlas.hcl --
env "local" {
    src = "1.hcl"
    dev = "sqlite://devdb"
}
-- 1.hcl --
table "users" {
  schema = schema.main
  column "id" {
    null = false
    type = int
  }
}
schema "main" {
}
-- diff.sql --
-- Create "users" table
CREATE TABLE `users` (`id` int NOT NULL);