15.10 - Job Example 16: Extract BLOB/CLOB/JSON Data and Write It to an External File - Parallel Transporter

Teradata Parallel Transporter User Guide

prodname
Parallel Transporter
vrm_release
15.10
category
User Guide
featnum
B035-2445-035K

Job Example 16: Extract BLOB/CLOB/JSON Data and Write It to an External File

Job Objective

Extract rows that include BLOB/CLOB/JSON data from a Teradata Database table and write them to an external flat file.

Data Flow Diagram

Figure 41 shows a diagram of the elements for Job Example 14.

Figure 41: Job Example PTS00021, PS00027-- Extract BLOB/CLOB/JSON Data and Write It to an External File

Sample Script

For the sample script that corresponds to this job, see the following scripts in the sample/userguide directory:

PTS00021: Extracting BLOB/CLOB Data and Writing It to an External Target.

PTS00027: Extracting BLOB/CLOB/JSON Data and Writing It to an External Target.

Rationale

This job uses the operators shown for the following reasons:

  • Use SQL Selector operator because it is the only operator that can read BLOB/CLOB/JSON data from a Teradata Database and write it to separate external data files. One data file stores data for one LOB/JSON column.
  • Use DataConnector operator because it is the only operator that can write LOB/JSON data to an external file.