# FUNNELEVENTSFUNCTIONEVAL

Evaluates completed window funnel runs and returns selected extra-field values for each matched step.

## Signature

> `FUNNELEVENTSFUNCTIONEVAL(timestampExpression, windowSize, numberSteps, stepExpression1, ..., stepExpressionN, extraFieldCount, extraFieldExpression1, ..., extraFieldExpressionM [, 'mode=...' | 'strict_order' | 'strict_deduplication' | 'strict_increase' | 'keep_all' | 'maxStepDuration=...'])`

## Parameters

| Parameter                                         | Description                                                                                                                                                                                     |
| ------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `timestampExpression`                             | Expression that evaluates to the event timestamp. Pinot accepts `TIMESTAMP` or `LONG` values.                                                                                                   |
| `windowSize`                                      | Positive time window literal. Funnel steps must complete within this window.                                                                                                                    |
| `numberSteps`                                     | Number of funnel steps. This must match the number of step expressions that follow.                                                                                                             |
| `stepExpression1 ... stepExpressionN`             | Boolean expressions that define each funnel step in order.                                                                                                                                      |
| `extraFieldCount`                                 | Number of extra-field expressions to capture for each matched step. This must match the number of extra-field expressions that follow.                                                          |
| `extraFieldExpression1 ... extraFieldExpressionM` | Expressions whose values should be returned for each matched step. Pinot converts the returned values to strings.                                                                               |
| Optional trailing arguments                       | Optional funnel controls shared with the other window funnel functions, including `mode=...`, `strict_order`, `strict_deduplication`, `strict_increase`, `keep_all`, and `maxStepDuration=...`. |

## Returns

Returns a `STRING[]`.

The first element is a header string:

* the first number is the number of matched funnel runs
* each following number is the count of flattened extra-field values emitted for that matched run

The remaining array elements are the requested extra-field values flattened in matched step order for each completed funnel run.

If Pinot finds no completed funnel run, the result contains only `0`.

## Example

```sql
SELECT
  userId,
  funnelEventsFunctionEval(
    timestampCol,
    '1000',
    4,
    url = '/product/search',
    url = '/cart/add',
    url = '/checkout/start',
    url = '/checkout/confirmation',
    3,
    timestampCol,
    userId,
    url
  ) AS funnelEvents
FROM events
GROUP BY userId
ORDER BY userId
```

For a single matched four-step funnel, Pinot's integration tests return a `STRING[]` shaped like:

```
["1, 12", "1000", "user00", "/product/search", "1010", "user00", "/cart/add", ...]
```

Here `1, 12` means one matched funnel run and twelve flattened extra-field values after the header (`4 steps * 3 extra fields`).

For more information on the related funnel functions, see [Funnel Analysis Functions](/functions/funnel.md).


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.pinot.apache.org/functions/aggregation/funneleventsfunctioneval.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.