Sample External JSON Data with READ_NOS | Native Object Store | Teradata Vantage - Sampling External Data in Place Using READ_NOS - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Native Object Store Getting Started Guide
Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Published
January 2021
Language
English (United States)
Last Update
2021-01-22
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B035-1214
lifecycle
previous
Product Category
Software
Teradata Vantage

Preview the contents of an external object store by using the READ_NOS table operator. In this example, the payload column contains the data.

The examples and results show a sample river flow data set. To use your own data, replace the table and column names, and authorization object.

Before proceeding, verify with your database administrator that you have the correct privileges, an authorization object, and a function mapping (for READ_NOS statements).
  1. To run NOS-related commands, log on to the database as a user with the required privileges.
  2. Sample the data in place: 
    SELECT TOP 2 payload.* FROM READ_NOS_FM (
ON ( SELECT CAST( NULL AS JSON ) )
USING
LOCATION('YOUR-STORAGE-ACCOUNT')
) AS D;

    See Variable Substitutions for Examples for the credentials and location values for the sample river flow data set.

    Result:

    Payload.*
-------------------------------------------------------------------
["09380000","2018-07-01 00:00","10000","8.65","11.6","662","0.00"]
["09380000","2018-06-28 00:00","15900","9.91","11.0","671","0.00"]