jsonextractkey

This section contains reference documentation for the JSONEXTRACTKEY function.

Extracts all matched JSON field keys based on 'jsonPath' into a STRING_ARRAY.

Signature

JSONEXTRACTKEY(jsonField, 'jsonPath')

Arguments Description

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

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.

The examples in this section are based on the Batch JSON Quick Start. In particular we'll be querying the row WHERE id = 7044874109.

select id, repo, JSONEXTRACTKEY(repo, '$.*') AS keys
from githubEvents 
WHERE id = 7044874109

id repo keys

id	repo	keys
7044874109	{"id":115911530,"name":"LimeVista/Tapes","url":"https://api.github.com/repos/LimeVista/Tapes"}	`$['id'],$['name'],$['url']`

7044874109

{"id":115911530,"name":"LimeVista/Tapes","url":"https://api.github.com/repos/LimeVista/Tapes"}

$['id'],$['name'],$['url']