Query a Row Using Native Object Store | NOS | Teradata Vantage - 17.05 - Querying for a Specific Set of Rows - Teradata Database

Teradata Vantage™ - Native Object Store Getting Started Guide

prodname
Advanced SQL Engine
Teradata Database
vrm_release
17.05
created_date
January 2021
category
Programming Reference
featnum
B035-1214-175K

The examples use a sample river flow data set. To use your own data, replace the table and column names, and authorization object. See Variable Substitutions for Examples for the credentials and location values for the sample data set.

  1. To run NOS-related commands, log on to the database as a user with the required privileges.
  2. If it does not exist, create the foreign table or ask your database administrator to create the foreign table called riverflow_json. See Setting Up to Run JSON Examples.
  3. Query for a set of rows by specifying a specific value for the site_no attribute in the command’s WHERE clause. This requests that only records with that value be returned for viewing. In this example, the max value for the Flow attribute for a single site_no is returned.
    SELECT MAX(CAST(payload.Flow AS FLOAT) ( FORMAT '-ZZZZ9.99'))
      FROM riverflow_json
      WHERE payload.site_no = '09394500';

    Result:

    Maximum(Payload.Flow)
    ---------------------
                  1230.00