Vinay, a Data Engineer at GlobalMart, received a request from the Data Science team to extract a representative sample of customer transaction data. Unsure how to efficiently generate a balanced subset, he sought guidance from Rahul, the Senior Architect.
Through their conversation, Vinay learned about fraction-based sampling (BERNOULLI and SYSTEM) and fixed-size sampling in Snowflake. Rahul explained their use cases, syntax, and impact on data selection, helping Vinay understand how to apply sampling techniques for efficient and diverse data extraction.