Which one of the following statements is TRUE?
A . Spark SQL does not support HiveQL
B . Spark SQL does not support ANSI SQL
C . To use Spark with Hive, HiveQL queries have to rewritten in Scala
D . Spark SQL allows relational queries expressed in SQL, HiveQL, or Scala
Answer: D
Explanation:
Reference: https://spark.apache.org/docs/1.2.1/sql-programming-guide.html (overview)