subquery.json

{
  "type": "code_options",
  "author": "ccat",
  "source": "subquery.md",
  "notebook_enable": false,
  "exercise_id": "2fabb69f22224e48a26fec8911798ceb",
  "container_url": "https://mydev.csdn.net/ssh?image=cimg-centos7-skilltreemysql&connect=auto&create=auto&utm_source=skill"
}