{
  "db_name": "SQLite",
  "query": "SELECT (\n             -- Has a 'tiles' table\n             SELECT COUNT(*) = 1\n             FROM sqlite_master\n             WHERE name = 'tiles'\n                 AND type = 'table'\n             --\n         ) AND (\n             -- 'tiles' table's columns and their types are as expected:\n             -- 4 columns (zoom_level, tile_column, tile_row, tile_data).\n             -- The order is not important\n             SELECT COUNT(*) = 4\n             FROM pragma_table_info('tiles')\n             WHERE ((name = 'zoom_level' AND type = 'INTEGER')\n                 OR (name = 'tile_column' AND type = 'INTEGER')\n                 OR (name = 'tile_row' AND type = 'INTEGER')\n                 OR (name = 'tile_data' AND type = 'BLOB'))\n             --\n         ) as is_valid;",
  "describe": {
    "columns": [
      {
        "name": "is_valid",
        "ordinal": 0,
        "type_info": "Int"
      }
    ],
    "parameters": {
      "Right": 0
    },
    "nullable": [
      null
    ]
  },
  "hash": "7341bfc10beb4719811556a57ae8098085994c8fba93e0293359afd43079c50c"
}