WHERE Archives - Essential SQL

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Using Subqueries in the WHERE Clause

This is the third in a series of articles about subqueries. In this article we discuss subqueries in the WHERE clause. Other articles discuss their uses in other clauses. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the AdventureWorks2012 database. You can get started using these free tools […]

Subqueries – Introduction to a Subquery in SQL

The purpose of this article is to introduce you to subqueries and some of their high-level concepts. There are a lot of details to cover in order to learn sub queries, but you’ll see we cover those in depth in later articles. All the examples for this lesson are based on Microsoft SQL Server Management […]

What is the difference between WHERE and HAVING clauses?

In this article learn when to use WHERE and HAVING. Both perform similar functions, but for different purposes! All the examples for this article are based on Microsoft SQL Server Management Studio and the AdventureWorks2012 database. You can get started using these free tools using my Guide Getting Started Using SQL Server. How do Where and Having Differ? […]

Do Partial Matches Using LIKE

In this lesson you are going to explore how to do pattern matching with the SQL Where clause LIKE operator. Using this phrase allows us perform partial matches of data values and obtain answers to questions which can’t be done with conventional comparisons. The lesson’s objectives are to: learn about the like clause understand wild cards […]

Use Pattern Matching in SQL to Filter Results

In this lesson you are going to explore how to use pattern matching in SQL with the LIKE operator. Using this phrase allows us perform partial matches of data values and obtain answers to questions which can’t be done with conventional comparisons. The lesson’s objectives are to: learn about the LIKE match condition understand wild cards Important! Please follow […]

Query Results Using Boolean Logic

In today’s lesson you’re going to learn how to query results using the WHERE clause. The objectives of today’s lesson are to: Learn to use more than one compare condition at a time using Boolean logic Comprehensive example with Select, Where, and Order By Using Multiple Conditions to Query Results In previous lesson’s we learned how […]

Get Ready to Learn SQL Server: 4. Query Results Using Boolean Logic

In today’s lesson you’re going to learn more about filtering results returned from your queries using the WHERE clause. The objectives of today’s lesson are to: Learn to use more than one compare condition at a time using Boolean logic Comprehensive example with Select, Where, and Order By Important! Please follow along and do the examples […]

How to Filter Query Results

In today’s lesson you’re going to learn how filter the results returned from your queries using the WHERE clause. This clause is important as only those records matching the where clause’s conditions are returned in the query results. The objectives of today’s lesson are to: Learn about various condition types, such as Equality, Range, and […]

How to Filter Query Results

In today’s lesson you’re going to learn how to filter query results using the WHERE clause. This clause is important as only those records matching the where clause’s conditions are returned in the query results. The objectives of today’s lesson are to: Learn about various condition types, such as Equality, Range, and Membership Comprehensive example […]