{
  "name": "50_create_table_with_table_constraint",
  "operations": [
    {
      "create_table": {
        "name": "phonebook",
        "columns": [
          {
            "name": "id",
            "type": "serial",
            "pk": true
          },
          {
            "name": "name",
            "type": "varchar(255)"
          }
        ],
        "constraints": [
          {
            "name": "name_must_be_present",
            "type": "check",
            "check": "length(name) > 0"
          }
        ]
      }
    }
  ]
}