Question
Consider a self-join query to find all pairs of employees who have the same manager: SELECT e1.name, e2.name FROM Employees e1, Employees e2 WHERE e1.mgr_id = e2.mgr_id AND e1.emp_id <> e2.emp_id; Why is the condition "e1.emp_id <> e2.emp_id" necessary?
More IT Operating System Questions
- In an operating system's process scheduling, which data structure is typically used to manage processes waiting for CPU time, ensuring they are executed in...
- What is the purpose of the #include directive in C/C++ programming?
- You are asked to implement a feature that requires storing unique items and quickly checking for the existence of an item. Which data structure would be th...
- Which of the following is NOT a typical step in NLP text preprocessing?
- An algorithm has a time complexity of O(N² ). If the input size N doubles, how does the execution time approximately change?
- In Operating Systems, what is the difference between a process and a thread?
- When an object that has an incoming reference is deleted or deallocated, without modifying the value of the pointer, so that the pointer still points to th...
- A program compiles successfully but produces incorrect output for certain inputs. What type of error is this most likely to be?
- Linux uses a time-sharing algorithm ___________
- Which approach does BERT use for pre-training?
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)