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In todays article I’m going to be talking about advanced querying in SQL. I’m going to be using the same database schema we created in our previous...
During our previous SQL lessons, we used sqlite to run our queries. In this article I’m going to talk further about SQL by using MySQL. Since the last...
A subquery is a query nested within another query to provide intermediate results for the main query. Subqueries can appear in the: SELECT clause: To...
In this article we are going to be looking at the relationships between tables in SQL databases. So what are these SQL joins? Joins are used to...
In this article we will look at how to use aggregate functions to summarize and analyze data. Before we begin, please note that you can access all the...
SQL uses queries to manage data. Lets looks at the basic SQL commands which are the core commands that everyone should know. In the previous article...
