> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dune.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Sampling
Our API supports sampling on all `/results` endpoints to provide a uniform sample of the dataset for efficient data analysis and visualization. This feature is particularly useful for use cases like charting (if you only have 4 000 pixels on the chart, then 10 000 datapoints are plenty), where analyzing a full dataset isn't necessary. Sampling returns a subset (with a uniform distribution) of data, optimizing usage of very large results with reduced latency and costs. You can apply sampling to the following endpoints:
* [Get Execution Results](./endpoint/get-execution-result)
* [Get Execution Results CSV](./endpoint/get-execution-result-csv)
* [Get Query Results](./endpoint/get-query-result)
* [Get Query Results CSV](./endpoint/get-query-result-csv)
#### Example Sampling Request
```python theme={null}
from dune_client.client import DuneClient
# setup Dune Python client
dune = DuneClient()
query_result = dune.get_latest_result_dataframe(
query=3582296 # https://dune.com/queries/3582296 -> OHLC Price
, sample_count = 5000
)
print(query_result)
```
```bash theme={null}
curl -X GET "https://api.dune.com/api/v1/query/{{query_id}}/results?sample_count=10000" -H "x-dune-api-key: {{api_key}}"
```
```python theme={null}
import requests
url = "https://api.dune.com/api/v1/query/{query_id}/results"
headers = {"X-DUNE-API-KEY": ""}
params = {"sample_count": 10_000}
response = requests.request("GET", url, headers=headers, params=params)
print(response.text)
```
```javascript theme={null}
const options = {
method: 'GET',
headers: {
'X-DUNE-API-KEY': ''
}
};
const queryParams = new URLSearchParams({
sample_count: 10000
});
const url = `https://api.dune.com/api/v1/query/{query_id}/results?${queryParams}`;
fetch(url, options)
.then(response => response.json())
.then(response => console.log(response))
.catch(err => console.error(err));
```
### Sampling Parameters
#### `sample_count`
* **Type:** `integer`
* **Description:** Determines the number of rows to return as a sample from the result set. If the available dataset contains fewer rows than the specified `sample_count`, the entire dataset is returned.
- Sampling is designed to provide a randomized subset of data, with each request potentially producing different outcomes.
- When specifying `sample_count` (e.g., `sample_count = 10000`), the number is approximate. The actual number of rows returned may vary slightly (e.g., 10013, 10017), reflecting the probabilistic nature of the sampling process.
- `sample_count` is incompatible with `offset`, `limit`, and `filters` parameters.
- `sample_count` can be used with `columns` to specify which data fields to include in the sample.
- Specifying a low `sample_count` relative to total rows, being probabilistic, may return 0 rows due to the probability based sampling calculation (e.g., 10 in 100,000, means each row has \~0.01% chance to be included)
### Sampling Response
*Showing trimmed response for `sample_count=200` instead of specified `sample_count=10000` in example request to not overwhelm the doc.*
```json theme={null}
{
"execution_id": "01HR8D39V7N8WM653SVDW2G9WB",
"query_id": 3494402,
"is_execution_finished": true,
"state": "QUERY_STATE_COMPLETED",
"submitted_at": "2024-03-05T22:52:39.144099Z",
"expires_at": "2024-06-03T22:54:03.004092Z",
"execution_started_at": "2024-03-05T22:52:39.348798256Z",
"execution_ended_at": "2024-03-05T22:54:03.00409093Z",
"result": {
"rows": [
{
"amount_usd": 28.517144710689454,
"block_time": "2024-03-02 12:51:19.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 4892.433,
"block_time": "2024-03-05 13:42:59.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 31.579160400723985,
"block_time": "2024-03-04 20:17:56.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 84.162,
"block_time": "2024-03-05 07:26:54.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 1.5276341414539407,
"block_time": "2024-03-03 12:32:44.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 876.1714568508686,
"block_time": "2024-03-05 02:14:47.000 UTC",
"blockchain": "fantom"
},
{
"amount_usd": 4529.057,
"block_time": "2024-03-04 00:18:11.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 201.94357555355361,
"block_time": "2024-02-25 22:33:23.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 145.27394384575086,
"block_time": "2024-03-04 10:54:32.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 1070.7173780527592,
"block_time": "2024-03-04 13:57:21.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 223.82524240905198,
"block_time": "2024-03-02 08:31:15.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": 1950.3639893741088,
"block_time": "2024-03-03 05:09:47.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 719.5529722030446,
"block_time": "2024-03-05 09:27:23.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 6.89141479932381,
"block_time": "2024-03-01 03:35:39.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 368.6550396139464,
"block_time": "2024-03-04 11:05:35.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 105.21798800684901,
"block_time": "2024-03-05 16:04:47.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 31.17956089030626,
"block_time": "2024-03-05 18:17:05.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": 43.21002361278373,
"block_time": "2024-03-03 14:40:21.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 1448.8800596106462,
"block_time": "2024-03-02 12:47:21.000 UTC",
"blockchain": "base"
},
{
"amount_usd": 0.01001462,
"block_time": "2024-03-03 02:18:02.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 43.94295029931569,
"block_time": "2024-03-02 13:25:28.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 608.562,
"block_time": "2024-02-25 13:13:11.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 85.02994808708173,
"block_time": "2024-02-25 15:36:48.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 2849.089609803931,
"block_time": "2024-02-25 21:21:23.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 742.1382966435165,
"block_time": "2024-02-26 09:23:10.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 1523.857600998093,
"block_time": "2024-02-26 21:29:40.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 1.000853,
"block_time": "2024-02-25 22:25:16.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 187.32483603639648,
"block_time": "2024-02-26 05:38:59.000 UTC",
"blockchain": "ethereum"
},
{
"amount_usd": 9.365232080867631,
"block_time": "2024-03-04 21:59:33.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": 7.85318483149416,
"block_time": "2024-02-28 02:39:53.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 62.43033115744735,
"block_time": "2024-02-27 06:40:47.000 UTC",
"blockchain": "base"
},
{
"amount_usd": 245.49353625178662,
"block_time": "2024-02-27 08:02:35.000 UTC",
"blockchain": "bnb"
},
{
"amount_usd": 2.1101359357968,
"block_time": "2024-02-28 17:24:20.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": 887.988462523146,
"block_time": "2024-02-29 08:56:34.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": null,
"block_time": "2024-02-27 16:20:57.000 UTC",
"blockchain": "optimism"
},
{
"amount_usd": 0.9971501669140281,
"block_time": "2024-03-05 20:28:38.000 UTC",
"blockchain": "polygon"
},
{
"amount_usd": 16.03705776420069,
"block_time": "2024-03-03 23:27:03.000 UTC",
"blockchain": "base"
},
{
"amount_usd": 5.38636576521727,
"block_time": "2024-03-01 23:00:13.000 UTC",
"blockchain": "base"
},
{
"amount_usd": 30.130297357061917,
"block_time": "2024-02-27 02:20:07.000 UTC",
"blockchain": "bnb"
}
],
"metadata": {
"column_names": [
"blockchain",
"block_time",
"amount_usd"
],
"row_count": 213,
"result_set_bytes": 12119,
"total_row_count": 22325371,
"total_result_set_bytes": 1175314615,
"datapoint_count": 639,
"pending_time_millis": 204,
"execution_time_millis": 83655
}
}
}
```