Where can I view task logs in Airflow?
Middle
484
Data Engineer
743
0
How familiar are you with Linux/Docker?
Senior
470
How do you pass data between different Airflow tasks?
Middle+
469
How can data be transferred when migrating a materialized view from Greenplum to ClickHouse?
Middle
460
What types of databases do you know?
Middle
447
Given two tables t1 and t2. List all types of joins you know, and the result of the query select * from t1 <join> t2 on t1.t = t2.t for each. |t1.t| ------ 1 2 4 null ------ |t2.t| ------ 1 3 null null
Middle
443
[name] tell us about your current project: what did you do, what interesting tasks, technologies, and the complexity of the project.
Middle+
442
How does the query optimizer in Oracle work, what does it consider, and to which class does it belong?
Middle
438
What data volumes did you have to process?
Middle+
430
What is the difference between RANK() and DENSE_RANK()?
Junior
411
What does the window function LEAD do in SQL?
Middle
411
Have you worked with Apache NiFi?
Middle+
410
How can an SQL injection occur through a date input field?
Middle
401
Do you have any questions at this stage?
Middle+
394
Describe an end-to-end technical task: from source to storefront, including layers and actions at each stage.
Middle+
390
How does ClickHouse work and how does it differ from PostgreSQL?
Middle
387
Tell about your recent work experience, what projects, what stack?
Middle+
385
What is the difference between docker run and docker exec commands?
Senior
376
What is the purpose of slicing data into blocks in HDFS?
Middle
368
How does Pandas handle missing data?
Middle
365