You have an enterprise data warehouse in Azure Synapse Analytics.
Using PolyBase, you create an external table named [Ext].[Items] to query Parquet files stored in Azure Data Lake Storage Gen2 without importing the data to the data warehouse.
The external table has three columns.
You discover that the Parquet files have a fourth column named ItemID.
Which command should you run to add the ItemID column to the external table?
 

A. Option A

B. Option B

C. Option C

D. Option D








 

Suggested Answer: A

Incorrect Answers:
B, D: Only these Data Definition Language (DDL) statements are allowed on external tables:
✑ CREATE TABLE and DROP TABLE
✑ CREATE STATISTICS and DROP STATISTICS
✑ CREATE VIEW and DROP VIEW
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/statements/create-external-table-transact-sql

This question is in DP-200 Microsoft Azure Data Engineer Exam
For getting Microsoft Certified: Azure Data Engineer Associate Certificate



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