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
jsonField
An Identifier/Expression contains JSON documents.
'jsonPath'
Follows JsonPath Syntax to read values from JSON documents.
'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
      }
    ]
  }
}
Expression
Value
JSONPATHLONG(data, '$.age')
24
This function can be used in the table config to extract the age property into the age column, as described below:
{
   "tableConfig":{
      "ingestionConfig":{
         "transformConfigs":[
            {
               "columnName":"age",
               "transformFunction":"JSONPATHLONG(data, '$.age')"
            }
         ]
      }
   }
}

Arguments	Description
`jsonField`	An Identifier/Expression contains JSON documents.
`'jsonPath'`	Follows JsonPath Syntax to read values from JSON documents.

Expression	Value
`JSONPATHLONG(data, '$.age')`	`24`

JSONPATHDOUBLE

JSONPATHSTRING

Last modified 1yr ago