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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Snowpark API and Development | 30% | - Multi-language support
|
| Topic 2: Snowpark Concepts and Architecture | 25% | - Snowpark architecture and execution model
|
| Topic 3: Data Transformations and Operations | 35% | - DataFrame manipulation
|
| Topic 4: Performance and Best Practices | 10% | - Optimization techniques
|
>> SPS-C01 Valid Exam Guide <<
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NEW QUESTION # 342
You have a Snowflake table 'user_profiles' with a VARIANT column 'profile_data'. This column contains JSON objects, and one of the fields within these objects is an array called 'interests'. The 'interests' array contains JSON objects, each with 'name' and 'category' fields. You need to use Snowpark to flatten the 'interests' array and extract the 'name' and 'category' for all user profiles, but only for profiles where the user's 'status' is 'active'. You want to write this in the most efficient way possible. Which of the following code snippets will achieve this?
Answer: D
Explanation:
Option E is the most efficient. Filtering the data frame for 'active' profiles before exploding the 'interests' array reduces the number of rows the explode function needs to process, thus minimizing the computational load and optimizing query performance. Options A and B performs explodes first and then filters and hence, not very performant. D is not valid syntax for Snowpark. C selects the data first but the performnace is not at par with E.
NEW QUESTION # 343
Consider the following Snowpark Python code snippet designed to create a DataFrame and then register a custom function (UDF):
This code runs successfully. However, you need to deploy this as a stored procedure. What minimal changes are required to make this code runnable as a Snowpark Python stored procedure and callable from SQL?
Answer: C
Explanation:
When deploying as a stored procedure, 'return will cause an error since stored procedures cannot return Snowpark DataFrames directly to SQL. You need to return the DataFrame to pandas using 'return and remove 'return_type' and 'input_types' arguments of udf to allow inference.
NEW QUESTION # 344
You have a Snowpark DataFrame containing sales data with columns 'region' , and 'sales_amount'. You need to calculate the total sales amount for each region and then filter the results to only include regions where the total sales amount is greater than 10000. Which of the following Snowpark code snippets correctly implements this logic?
Answer: E
Explanation:
Option C is correct because it uses the correct Snowpark syntax for grouping by region, summing the sales amount with an alias, and then filtering based on the aliased column. Option A is incorrect as it omits the 'sf.' prefix for 'sum' and 'col' within the 'filter'. Option B uses where' instead of Tilters but correctly aggregates. Option D incorrectly compares a string to a number in the filter. Option E uses a non-standard way of referencing the aggregated column in the 'where' clause.
NEW QUESTION # 345
You have a Snowpark DataFrame 'customer data df containing customer information, including 'customer id', 'email', and phone number'. You need to anonymize the 'email' and 'phone number" columns for customers residing in specific countries (e.g., 'USA', 'Canada') before persisting the changes back to the 'customers' table. Anonymization should replace sensitive data with 'XXXXX'. You want to leverage UDF for obfuscation. What is correct and optimal approach considering performance and security?
Answer: B,C
Explanation:
Options B and E provide the most efficient and secure solutions. Option B correctly utilizes the 'when' function along with a registered UDF ('anonymize_udf) to conditionally anonymize the 'email' and 'phone_number' columns only for customers in 'USA' or 'Canada'. This ensures that only the necessary data is modified. Option E creates and uses a temporary UDF with SQL, achieving the same result in a different (yet valid) way. Option A is less efficient because it filters the DataFrame, updates it, and then joins it back with the original, which can be computationally expensive. Additionally, join can produce cartesian results if not done properly. Option C, while straightforward, hardcodes the anonymized value directly, which might not be the best practice in all scenarios and doesn't use a UDF. Option D, although similar to B, attempts to create a permanent UDF without specifying the stage location, which may lead to errors and is not best practice unless you manage it. Also creating a UDF in Python using SQL can be faster and safer.
NEW QUESTION # 346
You are working with a Snowpark DataFrame representing sensor data. The DataFrame contains columns like 'timestamp', 'sensor id' , and 'value'. You need to perform a complex windowing operation to calculate the moving average of the 'value' for each 'sensor id' over a 5-minute window, but only for data points where the 'value' is greater than a threshold. The window should be defined based on the 'timestamp' column. What is the most efficient and correct approach to implement this using Snowpark DataFrames?
Answer: A
Explanation:
The most efficient and correct approach is to use Snowpark's built-in windowing functions. Applying the threshold using 'filter' before the windowing operation reduces the amount of data processed by the window function, improving performance. Using 'Window.partitionBy' and 'Window.orderBy' correctly defines the window based on 'sensor_id' and 'timestamp', respectively. Using 'avg' window function calculates the moving average within the defined window. Options B, C, and D are less efficient because they involve transferring data to the client side (Pandas) or using UDFs, which can introduce overhead. Option E reverses the correct process.
NEW QUESTION # 347
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