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How to Create a Self-Contained Multi-Valued Subquery in SQL Server

In this tutorial you will learn how to create a self-contained multi-valued subquery. You may be wondering, what exactly is a multi-valued subquery? It is a subquery that returns multiple […]

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How to Create a Self-Contained Scalar Subquery in SQL Server

In this tutorial you will learn what a self-contained scalar subquery is and how to create one. A scalar subquery is a subquery that returns a single value regardless if […]

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How to Outer Join Tables in SQL Server

Filed in: Joins, SQL Server

This tutorial will show you how to use the outer joins on tables. Outer joins make use of the JOIN keyword between the table names to let SQL Server know […]

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How to Self-Join a Table in SQL Server

Filed in: Joins, SQL Server

This tutorial will show you how to self-join a table in SQL Server. By self-joining a table we are able to manipulate SQL Server into thinking that a self-joined table […]

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How to Use the INNER JOIN Keyword in SQL Server

Filed in: Joins, SQL Server

In this tutorial you will learn how to use the INNER JOIN keyword. The INNER JOIN keyword returns rows when there is at least one match in two tables. This is […]

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How to Use the GETDATE Function in SQL Server

Filed in: Queries, SQL Server

This tutorial will show you how to use the GETDATE function in SQL Server. The GETDATE function retrieves the current date and time from the SQL Server at run time. […]

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How to Use Wild Cards in SQL Server

Filed in: Queries, SQL Server

In this tutorial you will learn how to use wildcards in SQL Server. SQL wildcards can be used when searching for data in a database. SQL wildcards are used with the […]

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How to Use the CASE Expression in SQL Server

Filed in: Queries, SQL Server

In this tutorial you will learn how to use the CASE expression. A CASE expression is given a value that runs through the conditional logic and returns a value. Because […]

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How to Use the TOP Option in SQL Server

Filed in: Queries, SQL Server

In this tutorial you will learn how to use the TOP option. The TOP option  is a exclusive T-SQL feature that allows you to limit the number or percentage of […]

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How to Use the GROUP BY Statement in SQL Server

Filed in: Queries, SQL Server

This tutorial will show you how to use the GROUP BY statement in SQL Server. Using GROUP BY allows you to arrange the rows specified in the clause. Think of […]

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