The Full Stack Web Development - Part 2 - Distinct, Aliases & Concat

The video tutorial covers three key SQL concepts: DISTINCT, aliases, and CONCAT. It begins with an explanation of how DISTINCT is used to return unique values from a dataset, followed by a demonstration of using aliases to format column names for better readability. Finally, the tutorial shows how to use CONCAT to combine multiple columns into a single output, providing practical examples for each concept.

What is the primary purpose of using the 'distinct' keyword in SQL?

• To sort the data in ascending order

• To rename columns in the result set

• To combine multiple columns into one

• To filter out duplicate values from a result set

How can you rename a column in SQL to make it more readable?

• By using the 'distinct' keyword

• By using the 'concat' function

• By using the 'AS' keyword

• By using the 'GROUP BY' clause

What should you do if you want to use spaces in an alias name in SQL?

• Use the 'concat' function

• Use the 'distinct' keyword

• Use underscores instead of spaces

• Use quotes around the alias name

Which SQL function is used to combine multiple columns into a single column?

• CONCAT

• GROUP BY

• ORDER BY

• DISTINCT

In the example provided, which columns are combined to form the 'address' column using 'concat'?

• City, state, and zip code

• Street address, city, and state

• First name, last name, and city

• First name, last name, and street address