What is the difference between named instance and default instance in SQL Server?

Question

A default instance is a type of instance that is used when installing a single instance of SQL server. In contrast, a named instance is a type of instance where the user specifies an instance name when installing the instance. 27 нояб. 2018 г.

What Is Named instance and default instance?

A named instance is identified by the network name of the computer plus the instance name that you specify during installation. The client must specify both the server name and the instance name when connecting. By default, SQL Server installs in the default instance unless you specify an instance name.

What is the default instance in SQL Server?

The Default Instance of SQL Server will always be listed under port 1433. We will change this port to 1433 for our Named Instance.

What is the difference between named instance and instance ID?

INSTANCE NAME = Is attached to a SERVER NAME just like the way it's stated. When you try to connect to an SQL Database you need the server to be able to get in. It's all about the networking and properties of your Physical or Virtual machine hosting your DATABASE. INSTANCE ID = Is attached to SQL Instance Name.

Can we change named instance to default instance?

The only way to change the instance name is to re-install - uninstall and install as default instance.

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