Python Algorithms and SQL Online Test
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The Python and SQL online test assesses candidates' knowledge of programming in the Python language and their ability to use SQL.
It's an ideal test for pre-employment screening. A good Python developer needs to be able not only to solve problems using Python but also to write and analyze SQL queries to access a database.
This online test requires candidates to solve coding problems in Python and to write SQL queries that extract, combine, and manipulate data.
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Free Sample Questions for Python Algorithms and SQL Test
Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.
Students
Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.
TABLE students id INTEGER PRIMARY KEY, firstName VARCHAR(30) NOT NULL, lastName VARCHAR(30) NOT NULL
Binary Search Tree
Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.
Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.
For example, for the following tree:
- n1 (Value: 1, Left: null, Right: null)
- n2 (Value: 2, Left: n1, Right: n3)
- n3 (Value: 3, Left: null, Right: null)
Call to contains(n2, 3) should return True since a tree with root at n2 contains number 3.
Song
A playlist is considered a repeating playlist if any of the songs contain a reference to a previous song in the playlist. Otherwise, the playlist will end with the last song which points to None.
Implement a function is_repeating_playlist that, efficiently with respect to time used, returns true if a playlist is repeating or false if it is not.
For example, the following code prints "True" as both songs point to each other.
first = Song("Hello")
second = Song("Eye of the tiger")
first.next_song(second)
second.next_song(first)
print(first.is_repeating_playlist()) 
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Premium Questions for Python Algorithms and SQL Test
TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.
Question Names
These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.
Roads, ATM Locations, Authors, Autocomplete, Ban Users, Bank Branches, Cheapest Product, Countries, Developers, Employee Manager, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Tasks, Youngest Child, Delete Orders, Average Salary, Auto Show, Poll, Book Sale, Department Report, Veterinarian, Unique Numbers, Student Rankings, Student Max Score, Moving Total, Max Sum, Ingredients, Users and Accounts, Matching Clothes, Agents, River Discharge, Internal Nodes, Manager Sales, Paper Strip, Movie Genres, Student Activities, Welfare Organization, Transactions, Unique Product, Flight ConnectionsCovered Skills
Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.
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