apply 1.hcl
cmpshow users 1.sql

apply 2.hcl
cmpshow users 2.sql

-- 1.hcl --
schema "$db" {}

table "users" {
  schema = schema.$db
  column "created_at" {
    null = false
    type = timestamp
    comment = "without time zone"
  }
}

-- 1.sql --
                   Table "script_column_comment.users"
   Column   |            Type             | Collation | Nullable | Default
------------+-----------------------------+-----------+----------+---------
 created_at | timestamp without time zone |           | not null |

-- 2.hcl --
schema "$db" {}

table "users" {
  schema = schema.$db
  column "created_at" {
    null = false
    type = timestamptz
    comment = "with time zone"
  }
}

-- 2.sql --
                 Table "script_column_comment.users"
   Column   |           Type           | Collation | Nullable | Default
------------+--------------------------+-----------+----------+---------
 created_at | timestamp with time zone |           | not null |