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Answer: The record will not be added to the table, and an error message will be shown.
The correct answer is **B**: The record will not be inserted in the table and an error message will be displayed. Here's why: 1. **Data Definition vs. Data Manipulation**: - The `CREATE TABLE ... USING CSV` statement defines a table based on the data in the `venues.csv` file. This creates a table in the Delta Lake format (or a similar format depending on your environment), not just a simple table linked to the CSV file. 2. **Inserting into a Delta Table**: - To add data to a Delta Lake table, you use standard SQL `INSERT INTO` statements. However, these statements directly insert data into the table itself, not back into the original CSV file. In essence: - The `CREATE TABLE ... USING CSV` statement reads the CSV and creates a structured table within your data warehouse. - Subsequent `INSERT INTO` statements add new rows to that structured table, not the original CSV file. **Note**: - The exact behavior might vary slightly depending on the specific Delta Lake or data lake implementation you are using. This clarifies how data is handled when creating tables from external files and then inserting data into those tables.
Author: LeetQuiz Editorial Team
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A data engineer is tasked with creating a table from a venues.csv file located at dbfs:/FileStore/data/. The engineer successfully executes the following SQL statement to create the table:
CREATE TABLE venues
(name STRING, area INT)
USING CSV
LOCATION 'dbfs:/FileStore/data/'
CREATE TABLE venues
(name STRING, area INT)
USING CSV
LOCATION 'dbfs:/FileStore/data/'
Subsequently, the engineer attempts to add a record to the table using the INSERT INTO command. What will be the outcome of this command?
A
The record will be added to the venues table, and a new CSV file will be created in the dbfs:/FileStore/data/ directory.
B
The record will not be added to the table, and an error message will be shown.
C
The record will be added to both the table and the venues.csv file.
D
The record will not be added to the table, but a confirmation message will be displayed.
E
The record will be added to the venues.csv file but not to the venues table.