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Snowflake SnowPro Advanced: Data Analyst Certification Exam Sample Questions (Q43-Q48):
NEW QUESTION # 43
You have a Snowflake table named 'customer transactionS with columns: 'customer id', 'transaction date', 'transaction amount, and product_categorV. You need to identify customers who have made purchases in more than three different product categories within the last 30 days. Which of the following Snowflake SQL queries is the MOST efficient and accurate way to achieve this, considering the large size of the table?
Answer: A
Explanation:
Option C is the most efficient. It directly groups by 'customer_id' and uses the 'HAVING' clause to filter customers who have purchased from more than three distinct product categories within the specified date range. Option A is functionally correct but less concise. Option B uses an inefficient subquery. Option D returns all customer IDs who purchased from any product category within the timeframe. Option E attempts to use window functions and ARRAY AGG, which is unnecessarily complex and less performant for this task.
NEW QUESTION # 44
Identifying demographics and relationships in a dataset is crucial for:
Answer: A
NEW QUESTION # 45
You have a Snowflake table named 'LOG DATA' with a "VARIANT' column called 'log_message" storing application logs in JSON format. The 'log_message' structure contains a nested JSON object called 'context' , which may or may not be present in every log entry. The 'context' object itself contains several key-value pairs, including potentially a 'user_id', a 'session_id' , and/or a 'request_id' You need to extract all the unique combination of 'user _ id' , and 'request_id' that exist across the dataset, accounting for instances where the 'context' object or any of the individual IDs are missing (represented as NULL). The goal is to ensure no errors are thrown due to missing fields. Select all the options which would achieve this outcome.
Answer: A,D
Explanation:
Options B and E are both valid solutions. Option B Uses 'TRY TO_STRING' function. If value is not present and is NULL, then automatically it will be converted to Null without any failure. Option E Uses 'COALESCE will handle any missing 'context object or missing IDs within the 'context' object without throwing an error. If any of the three values are NULL then it would be converted to string 'NULL'. Why other options are not entirely correct Option A This is not a correct answer, as a result in case NULL values encountered, this will result in failures. Option C & D This is a valid solution, however, since NVL and IFF functions are slower compared to TRY _ TO STRING and COALESCE, this result in slow processing. So, its not entirely correct answer.
NEW QUESTION # 46
You have a table named 'ORDERS with a 'ORDER DATE column stored as VARCHAR. The column contains dates in the format 'YYYY-MM-DD HH24:Ml:SS.FF3'. You need to calculate the number of orders placed in January 2023. Which of the following SQL statements will achieve this most efficiently and accurately, considering potential time zone differences configured at the user or account level?
Answer: D
Explanation:
Option E is the most robust because it explicitly handles the VARCHAR to TIMESTAMP conversion, incorporates timezone conversion from UTC to the session's timezone, and then extracts the DATE part for accurate filtering. This accounts for potential timezone discrepancies that might affect date boundaries. Options A and B rely on string manipulation, which is prone to errors and not recommended for date operations. Option C lacks time zone considerations, which can lead to issues. Option D is less efficient because MONTH() and YEAR() function needs to be applied, and it also lacks timezone conversion consideration.
NEW QUESTION # 47
You have a large dataset in Snowflake containing customer order information stored in a table named 'ORDERS' with columns 'ORDER_ID' ONT), 'CUSTOMER_ID' ONT), 'ORDER_DATE (DATE), 'TOTAL_AMOUNT' (FLOAT), and 'DISCOUNT_APPLIED' (BOOLEAN). You need to use Snowsight dashboards to analyze customer spending behavior and identify potential outliers. Which of the following visualizations, combined with appropriate SQL queries, would be MOST effective in identifying customers with unusually high or low order values? (Select TWO)
Answer: A,C
Explanation:
Options A and C are the most effective. A Box Plot (A) is ideal for identifying outliers in a distribution. By visualizing the distribution of total order amounts per customer, you can easily spot customers with unusually high or low spending. A Scatter Plot (C) directly shows the relationship between customer ID and total spending, making it easy to visually identify outliers based on their position relative to other data points. Option B is more suitable for trend analysis over time, and options D and E are useful but don't directly highlight individual customer outliers in terms of order value.
NEW QUESTION # 48
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