1661 Average Time of Process per Machine
1661 Average Time of Process per Machine: This is a really interesting question where we write a compact code of 1 line which is equivalent to multiline CTE code. Read more …
sql interview questions
Find the most common value (mode) in a specific column.
This question was asked in Interview at black rock. Read more Company: BlackRock CTC: 26LPA Source: LinkedIn SQL Interview Question Q. Find the most common value (mode) in a specific column. See …
Identify employees who have never received a performance review.
This question was asked in Interview at black rock. Read more Company: BlackRock CTC: 26LPA Source: LinkedIn SQL Interview Question Q. Identify employees who have never received a performance review. See this …
Write a query to retrieve the first order placed by each customer.
This question was asked in Interview at black rock. Read more Company: BlackRock CTC: 26LPA Source: LinkedIn SQL Interview Question Q. Write a query to retrieve the first order placed by each …
SQL Natural Join
What is SQL Natural Join? Natual Join is a type of join in SQL which combines row from 2 tables based on common column which has same name and datatype. …