The function in Snowflake that returns the URL of a stage using the stage name as the input is C. GET_PRESIGNED_URL. This function generates a pre-signed URL for a specific file in a stage, enabling secure, temporary access to that file without requiring Snowflake credentials. While the function is primarily used for accessing files in external stages, such as Amazon S3 buckets, it is instrumental in scenarios requiring direct, secure file access for a limited time.
It's important to note that as of my last update, Snowflake's documentation does not specifically list a function named GET_PRESIGNED_URL for directly obtaining a stage's URL by its name. The description aligns closely with functionality available in cloud storage services (e.g., AWS S3's presigned URLs) which can be used in conjunction with Snowflake stages for secure, temporary access to files. For direct interaction with stages and their files, Snowflake offers various functions and commands, but the exact match for generating a presigned URL through a simple function call may vary or require leveraging external cloud services APIs in addition to Snowflake's capabilities.
Reference:
Snowflake Documentation and cloud services (AWS, Azure, GCP) documentation on presigned URLs and stage interactions.

The Statistic output in the Query Profile Overview of Snowflake provides detailed insights into the performance of different parts of the query. Specifically, it highlights the "Most expensive nodes," which are the operations or steps within the query execution that consume the most resources, such as CPU and memory. Identifying these nodes helps in pinpointing performance bottlenecks and optimizing query execution by focusing efforts on the most resource-intensive parts of the query.
References:
* Snowflake Documentation on Query Profile Overview: It details the components of the profile overview, emphasizing how to interpret the statistics section to improve query performance by understanding which nodes are most resource-intensive.

When the DROP MANAGED ACCOUNT command is executed in Snowflake, it removes the managed account, including all objects created within the account, and access to the account is immediately restricted2.

Explanation
https://docs.snowflake.com/en/user-guide/snowcd.html#:~:text=SnowCD%20(i.e.%20Snowflake%20Connectivi