It’s always a good idea to test your queries on the actual database you’re using. Check the documentation for your database system if you run into any issues or need to make adjustments. If you have questions on any query, feel free to ask for help. We’ll guide you through it. ...
In the standard version of both SQL Practice Problems and More SQL Practice Problems, most questions have numerous hints that you can use to move forward in solving the practice problem. They’re very useful if you’re completely stuck on a problem. However, based on numerous requests from re...
SQL quiz questions.For example:“What is a primary key?”Or“List the different types ofJOINs!”That’s a stupid type of SQL tech assessment — as it focuses on theory and not on practice. Still, some companies… you know. Take-home SQL assignment.You get a more complex task and you...
The best way we learn anything is by practice and exercise questions. We have started this section for those (beginner to intermediate) who are familiar withSQL. Hope, these exercises help you to improve your SQL skills. Currently following sections are available, we are working hard to add ...
During the technical interview, we can face some query reading questions to understand our SQL query reading capabilities. For this reason, we need to make some SQL practice to improve our query reading skills. For example, the following question, which seems very simple but contains a bit of...
Basic SQL Questions 1. What are the types of SQL commands? SQL commands are grouped into the following categories: DDL (Data Definition Language): Commands like CREATE, ALTER and DROP that define or modify database structure. For example, creating a new table in a database involves a CREATE...
SQL Practice - July 3,18 One day off for yesterday because of overtime work. Again, two questions for today. Question 1:Consecutive Numbers Source: Leetcode Write a SQL query to find all numbers that appear at least three times consecutively....
This post will undoubtedly give you some insights if you’re looking for questions and answers to use while you prepare for a SQL interview. In a job interview for a data engineer, data analyst,database administrator, etc., the following questions should be expected. ...
SQL Questions & AnswersSQL Server Express, Encrypting Data, and MoreEdited by Nancy MichellDatabase Sizer ToolsQ Where can I find a database sizer tool that can be used for large SQL Server™ databases?A You should start with the Scalability and Very Large Database Resource Web site . The...
Schemas, Questions & Solutions for SQL Exercising Introduction The schemas and questions are [1] from WikibookSQL Exercises[https://en.wikibooks.org/wiki/SQL_Exercises]. Solutions are from both this Wikibook and me (exercise 1-8). I also added some questions by myself. ...