When working with tables in SQL, there may be some situations when you need to query three or more tables. You can join three tables by first using a join statement to join two tables to create a temporary joined table. Then use a second join statement to join the third table. Steps Type SELECT … Read more
This minHour teaches you how to use the ORDER BY clause in SQL to sort results from a table. The ORDER BY clause allows you to sort one or more columns in both ascending and descending order. Steps Enter SELECT *. This means we’ll be looking at all columns. Move to the next line. Enter … Read more
SQL stands for Structured Query Language and was originally developed by IBM in the 70s to interact with relational databases. It is the common language for databases, remains fairly readable and it is relatively simple to learn the basics (although the language can be very powerful). Steps ‘SQL’ is usually pronounced ‘S-Q-L’ (Structured Query Language). … Read more