Introduction to Common Table Expressions (CTE’s)
Common Table Expressions or CTE’s for short are used within SQL Server to simplify complex joins and subqueries, and to provide a means to query hierarchical data such as an organizational chart. In this set of articles, we’ll introduce you to common table expressions, the two types, and their uses. In this article we’ll introduce […]
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Learn the Three Crucial Steps to Writing Better SQL
You can learn to write SQL. It isn’t hard. Yes, there are many details to mind, but none of it is impossible. In this series of articles I’ll show you the three steps I go through to write complex queries. All the examples for this lesson are based on Microsoft SQL Server Management Studio and […]
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What is a Relational Database View?
A database view is a searchable object in a database that is defined by a query. Though a view doesn’t store data, some refer to a views as “virtual tables,” you can query a view like you can a table. A view can combine data from two or more table, using joins, and also just […]
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What are the Major Part of a SQL DB?
A SQL database is used to store and retrieve data. The database is housed in a database server and largely controlled by a database management system. All SQL databases, whether they MS SQL Server, MySQL, Oracle, or Progress have several components in common. They are: Tables Indexes Views Stored Procedures Triggers It is these various […]
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