Logical Operators and Compound Conditions
Explore how to apply SQL logical operators AND, OR, and NOT to create compound conditions within WHERE clauses. This lesson helps you build complex queries that filter data by combining multiple criteria, enhancing your data retrieval skills with practical examples.
Let’s start with generating a list of sales corresponding to a particular product, for example, 'Monitor 21in'.
Now, let’s enhance the query. Suppose we want to retrieve sales corresponding to monitors with a sales amount higher than 150. The required condition has two parts:
ProductName='Monitor 21in'SalesAmount>150
We must formulate the condition in the WHERE clause to satisfy both criteria. To achieve this, we need to find a way to combine the two.
To do that, we can employ logical operators. ...