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
Enrollment
A table containing the students enrolled in a yearly course has incorrect data in records with ids between 20 and 100 (inclusive).
TABLE enrollments id INTEGER NOT NULL PRIMARY KEY year INTEGER NOT NULL studentId INTEGER NOT NULL
Write a query that updates the field 'year' of every faulty record to 2015.
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.
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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, Student Activities, Tasks, Transactions, Youngest Child, Delete Orders, Average Salary, Movie Genres, Auto Show, Poll, Book Sale, Department Report, Veterinarian, Unique Numbers, Student Rankings, Welfare Organization, Student Max Score, Moving Total, Agents, River Discharge, Users and Accounts, Matching Clothes, Manager Sales, Flight Connections, Internal Nodes, Unique Product, Paper Strip, Max Sum, IngredientsCovered 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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