Example: NOSREAD_SCHEMA with Parquet Schema - Analytics Database - Teradata Vantage

SQL Data Manipulation Language

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-04-05
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pon1628111750298.ditamap
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esx1472246586715
lifecycle
latest
Product Category
Teradata Vantage™

If not already done, create the authorization object. See Example: Create an Authorization Object.

Run the READ_NOS command:

SELECT * FROM (
LOCATION='/s3/td-usgs-public.s3.amazonaws.com/PARQUETDATA/'
AUTHORIZATION=MyAuthObj
RETURNTYPE='NOSREAD_SCHEMA'
) AS d;

Your result will be similar to the following:

ColPosition      1
        Name GageHeight2
TdatDataType FLOAT
PhysicalType DOUBLE
 LogicalType NONE
   Precision           0
       Scale           0
   MinLength           0
   MaxLength           0
   NullFound    1
    FileType parquet
    Location /S3/s3.amazonaws.com/td-usgs-public/PARQUETDATA/

 ColPosition      2
        Name Flow
TdatDataType FLOAT
PhysicalType DOUBLE
 LogicalType NONE
   Precision           0
       Scale           0
   MinLength           0
   MaxLength           0
   NullFound    1
    FileType parquet
    Location /S3/s3.amazonaws.com/td-usgs-public/PARQUETDATA/

The output is displayed vertically for readability.