Answer: Total invocations

The correct answer is B (Total invocations) because according to Snowflake documentation and the community discussion consensus, 'Total invocations' is specifically tracked for external functions in Query Profiles. This metric counts the number of times an external function was called, which can differ from the number of calls in the SQL text due to batching, retries, or network issues. While option D (Bytes sent over the network) might seem relevant to external functions, it's not unique to them as network metrics apply to various Snowflake operations. Options A (Bytes written) and C (Partitions scanned) are general query performance metrics not specific to external functions. The community discussion shows strong consensus for B with 73% support and multiple users citing official documentation.

Author: LeetQuiz Editorial Team