> For the complete documentation index, see [llms.txt](https://docs.pinot.apache.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pinot.apache.org/release-1.0.0/configuration-reference/functions/jsonextractscalar.md).

# jsonextractscalar

This section contains reference documentation for the JSONEXTRACTSCALAR function.

Evaluates the 'jsonPath' on jsonField, returns the result as the type 'resultsType', use optional defaultValuefor null or parsing error.

## Signature

> JSONEXTRACTSCALAR(jsonField, 'jsonPath', 'resultsType', \[defaultValue])

| Arguments        | Description                                                                                                                                                                                                                                            |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `jsonField`      | An **Identifier**/**Expression** contains JSON documents.                                                                                                                                                                                              |
| `'jsonPath'`     | Follows [JsonPath Syntax](https://goessner.net/articles/JsonPath/) to read values from JSON documents.                                                                                                                                                 |
| `'results_type'` | <p>One of the Pinot supported data types:<strong><code>INT, LONG, FLOAT, DOUBLE, BOOLEAN, TIMESTAMP, STRING,</code></strong></p><p><strong><code>INT\_ARRAY, LONG\_ARRAY, FLOAT\_ARRAY, DOUBLE\_ARRAY, STRING\_ARRAY</code></strong><code>.</code></p> |

{% hint style="warning" %}
**`'jsonPath'`**` and`` `` `**`'results_type'`are literals.** Pinot uses single quotes to distinguish them from **identifiers**.
{% endhint %}

## Usage Examples

The examples in this section are based on the [Batch JSON Quick Start](/release-1.0.0/basics/getting-started/quick-start.md#batch-json). In particular we'll be querying the row `WHERE id = 7044874109`:

```sql
select repo
from githubEvents 
WHERE id = 7044874109
```

| repo                                                                                             |
| ------------------------------------------------------------------------------------------------ |
| {"id":115911530,"name":"LimeVista/Tapes","url":"<https://api.github.com/repos/LimeVista/Tapes"}> |

The following examples show how to use the `JSONEXTRACTSCALAR` function:

```sql
select id, jsonextractscalar(repo, '$.name', 'STRING') AS name
from githubEvents 
WHERE id = 7044874109
```

| id         | name            |
| ---------- | --------------- |
| 7044874109 | LimeVista/Tapes |

```sql
select id, jsonextractscalar(repo, '$.foo', 'STRING') AS name
from githubEvents 
WHERE id = 7044874109
```

```
[
  {
    "message": "QueryExecutionError:\njava.lang.RuntimeException: Illegal Json Path: [$.foo], when reading [{\"id\":115911530,\"name\":\"LimeVista/Tapes\",\"url\":\"https://api.github.com/repos/LimeVista/Tapes\"}]\n\tat org.apache.pinot.core.operator.transform.function.JsonExtractScalarTransformFunction.transformToStringValuesSV(JsonExtractScalarTransformFunction.java:254)\n\tat org.apache.pinot.core.operator.docvalsets.TransformBlockValSet.getStringValuesSV(TransformBlockValSet.java:90)\n\tat org.apache.pinot.core.common.RowBasedBlockValueFetcher.createFetcher(RowBasedBlockValueFetcher.java:64)\n\tat org.apache.pinot.core.common.RowBasedBlockValueFetcher.<init>(RowBasedBlockValueFetcher.java:32)",
    "errorCode": 200
  }
]
```

```sql
select id, jsonextractscalar(repo, '$.foo', 'STRING', 'dummyValue') AS name
from githubEvents 
WHERE id = 7044874109
```

| id         | name       |
| ---------- | ---------- |
| 7044874109 | dummyValue |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

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

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.pinot.apache.org/release-1.0.0/configuration-reference/functions/jsonextractscalar.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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.