Schemup migration

gistfile1.yml

---
table: favorite
from: null
to: tan_1
depends:
 - [lyrics_user, bgh_1]
 - [song, bgh_16]
sql: |
  CREATE TABLE favorite (
    id SERIAL NOT NULL PRIMARY KEY,
    user_id INTEGER NOT NULL REFERENCES lyrics_user(id) ON DELETE RESTRICT,
    song_id INTEGER NOT NULL REFERENCES song(id) ON DELETE RESTRICT,
    line INTEGER NOT NULL
  );