Data analysts don’t regularly need to write algorithms. But when they do, it might be something that can help them in data analysis. This data analyst interview question is such an example because it asks you to find the closest sum to the target. This or something similar is done using...
9. What are the prerequisites to become a Data Analyst? There are many skills that a budding data analyst needs. Here are some of them: Being well-versed in programming languages such as XML, JavaScript, and ETL frameworks Proficient in databases such as SQL, MongoDB, and more Ability to...
DS Interview Question What is Random Projection? BA Interview Question Write a query in SQL to count the number of unavailable rooms Sample table: room roomnumber | roomtype | blockfloor | blockcode | unavailable ---+---+---+---+--- 101 | Single | 1 | 1 | f 102 | Single | 1...
In SQL, a window function is a function that operates on a set of rows, or a" window", defined by a window specification. Window functions are used to perform calculations across rows, and they can be used in SELECT, UPDATE, and DELETE statements, as well as in the WHERE and ...
Question #2: Which Types of Data Analyst Tools Do You Have Experience With? You likely listed the data and SQL programs you've used on your resume. But an employer will ask a prospective data analyst technical interview questions to know more about your proficiency using programming languages,...
BA Interview Question Write a query in SQL to obtain the names of all the nurses who have ever been on call for room 122. Table: Nurse Employeeid | name | position | registered | ssn ---+---+---+---+--- Table: On_Call Nurse | blockfloor | blockcode | oncallstart | oncall...
BA Interview Question Write a query in SQL to find the name and medication for those patients who did not take any appointment. LeetCode Question Add Binary Description: Given two binary strings, return their sum (also...
BA Interview Question Write a query in SQL to count the number of available rooms in each floor. LeetCode Question Climbing Stairs Description: You are climbing a stair case. It takes n steps to reach to the top. ...
BA Interview Question Rank Scores Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking number should be the next consecutive integer value. In other words, there should be no "holes" between ...
BA Interview Question Write a query in SQL to count the number of available rooms in each floor. LeetCode Question N Queen Deion: The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. ...