1 of 1

JSONPATHLONG

This section contains reference documentation for the JSONPATHLONG function.

Extracts the Long value from jsonField based on 'jsonPath', use optional defaultValuefor null or parsing error. This function can only be used in an ingestion transformation function.

Signature

JSONPATHLONG(jsonField, 'jsonPath', [defaultValue])

Arguments

Description

'jsonPath'` is a literal. Pinot uses single quotes to distinguish them from identifiers. You can use the Jayway JsonPath Evaluator Tool to test JSON expressions before you import any data.

Usage Examples

The usage examples are based on extracting fields from the following JSON document:

{
  "data": {
    "name": "Pete",
    "age": 24,
    "subjects": [
      {
        "name": "maths",
        "homework_grades": [80, 85, 90, 95, 100],
        "grade": "A",
        "score": 90
      },
      {
        "name": "english",
        "homework_grades": [60, 65, 70, 85, 90],
        "grade": "B",
        "score": 70
      }
    ]
  }
}

This function can be used in the table config to extract the age property into the age column, as described below:

{
   "tableConfig":{
      "ingestionConfig":{
         "transformConfigs":[
            {
               "columnName":"age",
               "transformFunction":"JSONPATHLONG(data, '$.age')"
            }
         ]
      }
   }
}