What is SQL?
Structured Query Language (SQL) is a standardised programming language that is used to manage relational databases and perform various operations such as updating data on a database or retrieving data from a database. The term SQL is pronounced ess-kew-ell or sequel.
Uses of SQL
SQL can be used for:
- creating new databases
- creating new tables in a database
- retrieving data from a database
- executing queries against a database
- inserting records in a database
- updating records in a database
- deleting records from a database
SQL Career Opportunities
Some SQL job roles are:
- BI Developer
- Business Intelligence Analyst
- Data Analyst
- Data Engineer
- SQL Developer
According to the totaljobs site on 2nd March 2022, the average salary for SQL jobs is £52,500.
View the average salary for SQL jobs at Totaljobs site today
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SQL Installation
We recommend using Microsoft SQL Server Developer/Express edition to work with SQL. Here are some blogs regarding the Microsoft SQL Server installation:
You can also install and use MySQL or Oracle.
SQL Example
Here is a basic select statement to display all records from a table called Products:
SELECT * FROM Products;