Snowflake Interview Questions

47 real Snowflake questions asked in live technical interviews — each with a model answer. Updated weekly.

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How do you optimize performance in Snowflake?🟡 Medium · Conceptual · Asked 25×What are the features in Snowflake? How do you implement CDC in Snowflake?🟡 Medium · Conceptual · Asked 22×Suppose you want to migrate data from Snowflake to Tatiyah, how would you do it?🟡 Medium · Conceptual · Asked 1×What about Snowflake? Have you experienced Snowflake as well?🟢 Easy · Conceptual · Asked 1×How does Snowflake support storing semi‑structured data in different ways?🟡 Medium · Conceptual · Asked 1×Have you worked with Databricks and Snowflake?🟡 Medium · Conceptual · Asked 1×Say you have ingestion pipelines; what are you primarily using? Are you using Databricks or Snowflake? Was the whole platform considered?🟡 Medium · Conceptual · Asked 1×In Snowflake, how do you decide which data type to implement, why did you pick that type, and which storage format did you use?🟡 Medium · Conceptual · Asked 1×These are technology stack questions. I'm asking: When storing data, which format do you choose? In Snowflake, you can store data in native Snowflake format or Iceberg. In Databricks, you can store data in Delta Lake or Iceberg. Which format would you pick and why?🟡 Medium · Conceptual · Asked 1×Are you comfortable implementing Snowflake and Databricks with a similar model? Why would you need SCD Type 2 when implementing? Both cannot make sense if you’re leveraging either Delta Lake or Iceberg. What is the rationale to use SCD Type 2?🟡 Medium · Conceptual · Asked 1×Can you write an SQL statement to schedule a job that creates a task?🟡 Medium · Coding · Asked 1×Will you schedule drops in Snowflake? Can you explain one approach you can use to schedule Snowflake objects?🟡 Medium · Conceptual · Asked 1×How can streams be used in Snowflake?🟡 Medium · Conceptual · Asked 1×How do you work with Snowflake streams?🟡 Medium · Conceptual · Asked 1×After performing a join, how do you handle matched and unmatched records?🟡 Medium · Conceptual · Asked 1×After using a join, what are the next steps? Do you segregate, update, or insert records?🟡 Medium · Conceptual · Asked 1×Can a scenario be ignored? In the next scenario, how do you identify and update changes?🟡 Medium · Conceptual · Asked 1×I want to know how to implement a logical comparison using Snowflake utilities to compare source and target data, identify changes, and add old records with close dates and new active records. Can you explain this scenario, and how SNFKT values are used?🟡 Medium · Conceptual · Asked 1×In a scenario where you need to build a type 2 dimension table in Snowflake, assume you have a product table (or a sales table). How would you read and implement a type 2 table, including handling target dimension, fact table, and audit files?🟡 Medium · Conceptual · Asked 1×How can I check whether a table exists in Snowflake?🟢 Easy · Conceptual · Asked 1×What is the difference between permanent tables and transient tables in Snowflake?🟡 Medium · Conceptual · Asked 1×How many years of experience do you have working with Snowflake?🟢 Easy · Behavioral · Asked 1×How would you schedule daily ingestion of data from Oracle to Snowflake at 5 pm UTC?🟡 Medium · Conceptual · Asked 1×How would you schedule daily refresh jobs for an arbitrary number of tables when processing data from Oracle to Snowflake?🟡 Medium · Conceptual · Asked 1×I have a source table in Oracle that has no key constraints or primary key. Can I ingest data from this table to Snowflake using Python, and how would I handle the lack of a primary key?🟡 Medium · Conceptual · Asked 1×I have experience working with Python. Can you explain the configuration steps required to onboard new Oracle tables and ingest them into Snowflake using Python? What considerations are there for the source and target configurations?🟡 Medium · Conceptual · Asked 1×Do you generally configure Snowpipe? If you want to ingest files automatically into a table, do you set up Snowpipe?🟡 Medium · Conceptual · Asked 1×Can you explain Snowflake’s zero‑copy cloning, time travel, and Snowpipe setup?🟡 Medium · Conceptual · Asked 1×Can you tell about the Snowflake features you have come across?🟢 Easy · Conceptual · Asked 1×Avinash, have you worked on Snowflake?🟢 Easy · Other · Asked 1×Data capture, which is TDC. Only inserts, updates, deletes need to be written into Snowflake. Can you come up with a pipeline that will help us do this?🟡 Medium · System Design · Asked 1×Given the services mentioned, here's a scenario: We have data in either an RDS instance or DynamoDB. We need to load it into Snowflake at regular intervals in an incremental manner. How would you do this?🟡 Medium · System Design · Asked 1×In Snowflake, what is the difference between partitioning and clustering?🟡 Medium · Conceptual · Asked 1×Why did you use Snowpipe? What is it?🟡 Medium · Conceptual · Asked 1×In Snowflake, how do you write data using Snowpipe?🟡 Medium · Conceptual · Asked 1×Do Snowflake warehouses use indexes?🟢 Easy · Conceptual · Asked 1×Is it possible for the reporting team to query DynamoDB directly for dashboarding, or should we use Snowflake?🟡 Medium · Conceptual · Asked 1×How are data warehouses different from databases? For example, DynamoDB is a database, Snowflake is a data warehouse. What is the main purpose of a data warehouse?🟡 Medium · Conceptual · Asked 1×Can you pitch the team to use DynamoDB or Snowflake for a particular use case?🟡 Medium · Conceptual · Asked 1×I have used Snowflake extensively. What is the difference between Snowflake and DynamoDB? Why did you use Snowflake and for what purpose?🟡 Medium · Conceptual · Asked 1×Is Snowpipe needed for continuous data ingestion in Snowflake? If so, how would you implement it?🟡 Medium · Conceptual · Asked 1×Write a Snowflake stored procedure that uses a CASE statement to classify employees as 'High', 'Medium', or 'Low' based on their salary, and explain the benefits of using a cloud-based data warehouse.🟡 Medium · Coding · Asked 1×Explain the difference between stage and storage integration in Snowflake. How do you load data from a CSV file in S3 to Snowflake? What is the use case of strings?🟡 Medium · Conceptual · Asked 1×What is a stage in Snowflake?🟢 Easy · Conceptual · Asked 1×Have you used Snowflake before?🟢 Easy · Conceptual · Asked 1×For example, currently we have data on Snowflake; what are the different techniques to move data into Redshift?🟡 Medium · Conceptual · Asked 1×How do you handle versioning and rollback of data in Snowflake? What strategies can you use to recover data if you need to revert to a previous state?🔴 Hard · Conceptual · Asked 1×

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