Basic SQL Commands, Sorting with SQL and Grouping Data with SQL
- Writing SQL Statements, SQL Commands, and Retrieving Data:
- You’ll learn how to write SQL statements and commands to query and retrieve data from a database. Common commands include SELECT, INSERT, UPDATE, and DELETE.
- Sorting with SQL:
- Sorting involves arranging query results in a specific order, such as ascending or descending. The SQL ORDER BY clause is used for this purpose.
- Grouping Data with SQL:
- SQL GROUP BY is used to group rows that have the same values in specified columns. It’s often used with aggregate functions like SUM, COUNT, AVG, etc., to summarize data.