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A data analyst has provided a data engineering team with the following Spark SQL query:
1.SELECT district,
2.avg(sales)
3.FROM store_sales_20220101
4.GROUP BY district;
The data analyst would like the data engineering team to run this query every day. The date at the end of the
table name (20220101) should automatically be replaced with the current date each time the query is run.
Which of the following approaches could be used by the data engineering team to efficiently auto-mate this
process?- A. They could replace the string-formatted date in the table with a timestamp-formatted date
- B. They could wrap the query using PySpark and use Python's string variable system to automatically
update the table name - C. They could pass the table into PySpark and develop a robustly tested module on the existing query
- D. They could manually replace the date within the table name with the current day's date
- E. They could request that the data analyst rewrites the query to be run less frequently
Answer: B
NEW QUESTION 50
A junior data engineer needs to create a Spark SQL table my_table for which Spark manages both the data and
the metadata. The metadata and data should also be stored in the Databricks Filesystem (DBFS).
Which of the following commands should a senior data engineer share with the junior data engineer to
complete this task?- A. 1. CREATE TABLE my_table (id STRING, value STRING);
- B. 1. CREATE MANAGED TABLE my_table (id STRING, value STRING) USING
- org.apache.spark.sql.parquet OPTIONS (PATH "storage-path");
- C. 1. CREATE TABLE my_table (id STRING, value STRING) USING
- org.apache.spark.sql.parquet OPTIONS (PATH "storage-path")
- D. 1. CREATE MANAGED TABLE my_table (id STRING, value STRING);
- E. 1. CREATE TABLE my_table (id STRING, value STRING) USING DBFS;
Answer: A
NEW QUESTION 51
Which of the following is a Continuous Probability Distributions?- A. Normal probability distribution
- B. Binomial probability distribution
- C. Negative binomial distribution
- D. Poisson probability distribution
Answer: A
NEW QUESTION 52
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