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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

jsonField

An Identifier/Expression contains JSON documents.

'jsonPath'

Follows 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

repo

keys

7044874109

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

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