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About the test

The C#, Microsoft SQL Server, and SQL online test assesses candidates' knowledge of programming in the C# language and their ability to use T-SQL and SQL.

It's an ideal test for pre-employment screening. A good C# developer needs to be able not only to solve problems using C# but also to write and analyze stored procedures and SQL queries.

This online test requires candidates to solve coding problems in C#, write SQL Server procedures, and SQL queries that extract, combine, and manipulate data.

Sample public questions

3 min

A company is designing the class hierarchy for various cache implementations:

public class Cache {}

public class DiskCache : Cache {}

public class MemoryCache : Cache {}

public class OptimizedDiskCache : DiskCache {}

Select all the answers that will result in a runtime exception.

15 min
MS SQL Server
Date Functions
Stored Procedure

The following table is used in an application that tracks the items its users bought:

TABLE items
  dateBought DATE NOT NULL

Finish the ItemsBought procedure so that it returns only items whose dateBought is between @date and one month after @date (both inclusive). For each item it should return:

  • The day of the month the item was bought [1-31].
  • The number of the month the item was bought [1-12].
  • The name of the item.

See the example case here for more details.

3 min

Given the following data definition, write a query that returns the number of students whose first name is John.

TABLE students
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL

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102 more premium C#, MS SQL Server, and SQL questions

Driver Exam, Max Sum, Log Patch, Shipping, Classroom, Disposable Wrapper, Document Counter, Eye of the Storm, Node, Paragraph, Product Refactoring, Snapshot, Sort Params, Window Manager, Shining Star, Bicycle, Nullable Employee, Kilometer Converter, Stack to List, Fire Dragon, Log Parser, Ingredient Tuple, Animal Hierarchy, Chinese Box, Worker, Racer, XML Navigation, Roads, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Manager Sales, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, Segment, River Discharge, ATM Locations, Ceramic Store, Patient Class, String Occurrence, Username, Book Sale, Language Teacher, Unique Product, Stories, Procedural Generator, Internal Nodes, Weighted Average, Friend, Document Store, Crop Ratio, Hobbies, Platformer, User Procedure, Customer Paging, Manager Check, Shelf Test, Read Write Execute, Read First Line, Transactions, Merge Stock Index, Date Transform, Ban Users, Chain Link, Prefix, Unique Numbers, Moving Total, Veterinarian, Car Rental, Wheel Defects, Flight Connections, Paper Strip, Vectors.

Skills and topics tested

  • C#
  • Exceptions
  • Algorithmic Thinking
  • Extension Methods
  • Arithmetic
  • Accessibility Levels
  • Properties
  • Destructors
  • Memory Management
  • OOP
  • Refactoring
  • Recursion
  • Tree
  • Regex
  • Strings
  • Lists
  • Pass by Reference
  • Dictionary
  • Linked List
  • TDD
  • Field Modifiers
  • Null Coalescing Operator
  • Null Conditional Operator
  • Inheritance
  • Method Overriding
  • Complexity
  • Stack
  • Higher Order Function
  • Interfaces
  • Serialization
  • XML
  • LINQ
  • Tuples
  • Abstract Class
  • Data Structures
  • Bug Fixing
  • Multithreading
  • Synchronization
  • Dynamic Objects
  • SQL
  • Conditions
  • Views
  • Select
  • Create Index
  • Database Schema
  • Performance Tuning
  • Constraints
  • Create Table
  • Aggregation
  • Subqueries
  • Ordering
  • Indexes
  • Alter Table
  • Group by
  • Update
  • Insert
  • Joins
  • MS SQL Server
  • CTE
  • Left Join
  • Right Join
  • Delete
  • Union
  • Database Normalization
  • Stream
  • Sorting
  • Dynamic Programming
  • Random
  • Arrays
  • Graphs
  • Language
  • Integer Division
  • Iteration
  • Stored Procedure
  • T-SQL
  • Pagination
  • Test Case Design
  • Unit Testing
  • HashSet
  • Queue
  • StringBuilder

For job roles

  • .NET Developer
  • C# Developer
  • SQL Developer
  • Web Developer

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 High Performer 2022G2 Read Our Reviews

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