Subqueries Tagged SQL Tutorials


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How to Return Previous or Next Values in SQL Server 2008 R2

This tutorial will show how to create a query that returns previous and next values of a table column in SQL Server 2008 R2. Since rows in a table have […]

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How to Create and Use a Derived Table in SQL Server

This tutorial will show you how to create and use a derived table in SQL Server. Derived tables, also known as subqueries, are defined in the FROM clause of an […]

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How to Check for Existing Rows in a Subquery in SQL Server

This tutorial will show you how to use the EXISTS predicate and check if a row does or doesn’t exist in a subquery. The EXISTS predicate accepts a subquery as […]

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