CARS24 MIS Analyst Interview Questions and Answers

Rank function in Google Sheets is used to assign a rank to a value in a list based on its order.

• Rank function is used to determine the rank of a value in a list.

• It can be used to rank values in ascending or descending order.

• The syntax for the rank function is RANK(value, range, [is_ascending]).

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;

The order of query execution in SQL is: FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY.

• FROM: Specifies the tables from which data will be retrieved.

• WHERE: Filters the rows based on specified conditions.

• GROUP BY: Groups the rows based on specified columns.

• HAVING: Filters the groups based on specified conditions.

• SELECT: Retrieves the columns specified in the query.

• ORDER BY: Sorts the result set based on specified column

Query to find students with over 80 marks in English subject

• Use SELECT statement to retrieve data

• Filter the results using WHERE clause for marks greater than 80

• Include condition for English subject using AND operator

HAVING clause is used in SQL to filter groups based on specified conditions after GROUP BY clause.

• HAVING clause is used with GROUP BY clause to filter groups based on specified conditions.

• It is used to filter the results of aggregate functions like COUNT, SUM, AVG, etc.

• It is used to apply conditions to groups, similar to WHERE clause which applies conditions to individual rows.

• Example: SELECT department, AVG(salary) FR...read more

Aggregate functions are used to perform calculations on groups of rows in a table.

• Aggregate functions include SUM, AVG, COUNT, MIN, and MAX.

• They are commonly used in SQL queries to summarize data.

• For example, you can use SUM to calculate the total sales for a specific product.

• Another example is using AVG to find the average salary of employees in a department.

Use a SQL query with JOIN to retrieve employees between specified dates.

• Use the JOIN keyword to combine data from two tables

• Specify the date range using the WHERE clause

• Example: SELECT * FROM employees e JOIN dates d ON e.date = d.date WHERE d.date BETWEEN '2022-01-01' AND '2022-12-31'