Load XML File into Teradata via BTEQ
BTEQ is a Teradata utility tool that can be used to run Teradata SQL statements incl. DDL, DML, etc. It can also be used to import data from text file into Teradata databases. Like TPT and FASTLOAD, it can run in both batch and interactive modes.
This article demonstrates how to load XML file into Teradata.
Sample XML file
Create a sample XML file named sample.xml with the following content:
<category name="A"> <txns> <txn id="1">10.</txn> <txn id="2">11.</txn> <txn id="3">12.</txn> </txns> </category>
Sample table
Use the following statement to create the target table:
CREATE TABLE TestDb.BTEQ_XML_LOAD (ID INT, XML_DOC XML) PRIMARY INDEX(ID);
Create a CSV index file
Create a CSV file named xml-docs.csv with the following content:
sample.xml,1
Create BTEQ script file
Create BTEQ script file named load-xml.bteq with the following content:
LOGON 192.168.119.128/DBC,DBC; DATABASE TestDb; .IMPORT VARTEXT ',' DEFERCOLS=1 FILE='xml-docs.csv'; USING (XML_DOC XML AS DEFERRED, ID VARCHAR(10)) INSERT INTO BTEQ_XML_LOAD (CAST(:ID AS INTEGER), :XML_DOC); LOGOFF ;
The above script reads from xml-docs.csv file and then use the first attribute as deferred.
Run the script file
Run the following command to execute above BTEQ script:
bteq < load-xml.bteq
Output:
bteq < load-xml.bteq BTEQ 16.10.00.02 Mon Sep 14 17:02:53 2020 PID: 12352 +---------+---------+---------+---------+---------+---------+---------+---- LOGON 192.168.119.128/DBC, *** Logon successfully completed. *** Teradata Database Release is 16.10.00.03 *** Teradata Database Version is 16.10.00.03 *** Transaction Semantics are BTET. *** Session Character Set Name is 'ASCII'. *** Total elapsed time was 1 second. +---------+---------+---------+---------+---------+---------+---------+---- DATABASE TestDb; *** New default database accepted. *** Total elapsed time was 1 second. +---------+---------+---------+---------+---------+---------+---------+---- .IMPORT VARTEXT ',' DEFERCOLS=1 FILE='xml-docs.csv'; +---------+---------+---------+---------+---------+---------+---------+---- USING (XML_DOC XML AS DEFERRED, ID VARCHAR(10)) INSERT INTO BTEQ_XML_LOAD (CAST(:ID AS INTEGER), :XML_DOC); *** Insert completed. One row added. *** Total elapsed time was 1 second. +---------+---------+---------+---------+---------+---------+---------+---- LOGOFF ; *** You are now logged off from the DBC. *** BTEQ exiting due to EOF on stdin. *** Exiting BTEQ... *** RC (return code) = 0
References
Query XML data
Refer to page Extract XML Data via SQL Functions in Teradata to find out details about how to extract XML data using native functions.