[
  {
    "expression": "ts_rank(divide(close - vwap, ts_std_dev(close, 20)), 10) - ts_rank(volume, 10)",
    "time_consuming": 98.86,
    "status": "error",
    "message": "The read operation timed out",
    "timestamp": "2025-11-25 16:01:34"
  },
  {
    "expression": "rank(ts_delta(log(volume), 3)) * rank(divide(close - open, open))",
    "time_consuming": 29.52,
    "status": "error",
    "message": "The read operation timed out",
    "timestamp": "2025-11-25 16:08:15"
  },
  {
    "expression": "group_zscore(ts_regression(close, ts_mean(close, 10), 20, 0, 0), sector) - rank(ts_std_dev(volume, 10))",
    "time_consuming": 7.69,
    "status": "error",
    "timestamp": "2025-11-25 16:09:50",
    "message": "Got invalid value \"0\" for attribute \"lookback\", should be a positive integer"
  },
  {
    "expression": "rank(divide(close - ts_min(low, 20), ts_max(high, 20) - ts_min(low, 20))) - ts_rank(volume, 10)",
    "time_consuming": 6.82,
    "status": "error",
    "timestamp": "2025-11-25 16:16:40",
    "message": "Attempted to use inaccessible or unknown operator \"ts_min\""
  },
  {
    "expression": "if_else(close > vwap, rank(ts_corr(high, volume, 5)), reverse(rank(ts_corr(low, volume, 5))))",
    "time_consuming": 5.0,
    "status": "error",
    "message": "The read operation timed out",
    "timestamp": "2025-11-25 16:18:41"
  }
]