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A scalar function returns a single value based on the input value. Following are the widely used SQL scalar functions: LEN() - Calculates the total length of the given field (column). UCASE() - Converts a collection of string values to uppercase characters. LCASE() - Converts a collectio...
SQL Practice Exercises: Work on diverse queries like filtering, joining, and aggregating data to build your expertise. Test your knowledge with interactive quizzes that cover basic to advanced SQL concepts. Common SQL Interview Questions and Answers Prepare for SQL interviews with commonly asked ques...
Free Practice Test Instructions: FREE test and can be attempted multiple times. 60 Minutes 30 Multiple Choice Questions Fill in the Details to Get Started +91 IN INDIA+44 UK UNITED KINGDOM+1 US UNITED STATES+1 CA CANADA--- -- ---+376 AD ANDORRA+971 AE UNITED ARAB EMIRATES+93 AF AFGH...
Learn how to answer business questions with SQL Habit: practical SQL course for Product Managers, Marketers, Designers, Software Engineers, CEO and more. SQL Habit is a set of hundreds of bite-sized exercises which could be applied in real job right away
Choose your answer to the question and click "Continue" to see how you did. Then click 'Next Question' to answer the next question. When you have completed the free practice test, click 'View Results' to see your results. Good luck!
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 withSQLandOracle. Exercises are designed to enhance your ability to write well-structured PL/SQL programs. Hope, these exercises help you to ...
Some Arithmetic functions are - abs() ceil() floor() exp() ln() mod() power() sqrt() Character FunctionA character or string function is a function which takes one or more characters or numbers as parameters and returns a character value. Some Character functions are - ...
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...
Perform complicated calculations with SQL Server numeric functions Select the right T-SQL function to get and change date and time data Handle NULLs safely and effectively Change data from one data type to another in T-SQL Plus, you'll get to practice your skills on149 interactive exercises. ...