Comprehensive, community-driven list of essential SQL interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next SQL interview ahead of time.
16) How do you use a window function in SQL? Window functions perform aggregations over a defined row set without collapsing rows. Example: Assigning Row Numbers to Employees by Department SELECT EmployeeID, Name, Department, ROW_NUMBER() OVER(PARTITION BY Department ORDER BY Salary DESC) AS R...
Here, you will find a collection of real-world Interview questions asked in companies like Google, Oracle, Amazon, and Microsoft, etc. Each question comes with a perfectly written answer inline, saving your interview preparation time. It also covers practice problems to help you understand the ba...
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 . ...
Includes 36 coursesPython Basics. Part 1, Python Basics. Part 2, Python Basics. Part 3, Python Data Structures in Practice, Built-in Algorithms in Python, Working with Strings in Python, SQL Basics, SQL Practice Set, SQL JOINs, Standard SQL Functions, Creating Basic SQL Reports, Window Funct...
This error message looks daunting, especially if you’re new to SQL. However, it’s essential to remember that syntax errors are common, and with some practice, you can learn to avoid them. Understanding SQL Syntax SQL syntax is a crucial aspect of database management. You can create, modi...
Key rotation is a security best practice that helps protect data in case the key is compromised. The SQL Server Connector supports key rotation. Old keys shouldn't be deleted since it might be required to restore a database using an old key. To rotate a key, follow the steps in Rot...
The application is Best Practice, a medical practice management software. The base… SQL Server Migration Assistant SQL Server Migration Assistant A Microsoft tool designed to automate database migration to SQL Server from Access, DB2, MySQL, Oracle, and SAP ASE. 566 questions Sign in to ...
How can I use the function 'CTE' with multiple base tables and Delete the dupulicated row? How can I view the Locals Window? How can the rownum of oracle be represented in t-sql??? How can we change the default length of DateTime field in SQL Server how can we put semi colon in...
SQL_exercise_06 SQL_exercise_07 SQL_exercise_08 SQL_exercise_09 SQL_exercise_10 README.md SQL-exercise 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 ...