How to check whether the installed instance is full SQL Server or just SQL Server Express

Question

In one of my project, first I need to check whether SQL Server is installed on the machine or not. I am doing this with the code shown here:

 var sqlRegistry = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\Microsoft SQL Server", true);

 if (sqlRegistry == null) 
 { }
 else 
 { }

But in the else part, I need to know whether the installed SQL Server is "only" SQL Server Express, or a full SQL Server edition.

How will I go for this?

Answer 1

SQL-Server似乎有一个内置函数SERVERPROPERTY ，因此您应该能够通过SQL查询服务器，如：

SELECT SERVERPROPERTY('EngineEdition')

Answer 2

You can look at the installed instances in the registry key:

Software\Microsoft\Microsoft SQL Server\InstalledInstances

This will contain all the installed instances, eg on my system:

MSSQLSERVER
SQLEXPRESS

Go into this registry key with this value:

Software\Microsoft\Microsoft SQL Server\Instance Names\SQL

to get the actual instance name that you need in the next step.

Now if you go look at the registry key:

Software\Microsoft\Microsoft SQL Server\(InstanceName)\Setup\Edition

there you have a value of eg Express for a SQL Server Express, or Developer Edition or something else. That should tell you if you have Express or another, "full" edition of SQL Server

Answer 3

Here some code that get installed MS SQL Server Editions on server to console based on @marc_s answer:

//This line open Registry with x64 View from x86 process. Usually SQL server installed in x64 edition, otherwise you should check x86
var localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
var msSQLServer = localMachine.OpenSubKey(@"SOFTWARE\Microsoft\Microsoft SQL Server");
var instances = (string[])msSQLServer.GetValue("InstalledInstances");

foreach (var instance in instances)
{
    var insNames = localMachine.OpenSubKey(@"Software\Microsoft\Microsoft SQL Server\Instance Names\SQL");
    var realNameInstanse = (string)insNames.GetValue(instance);
    var sqlEditionRegistry = localMachine.OpenSubKey(string.Format(@"Software\Microsoft\Microsoft SQL Server\{0}\Setup", realNameInstanse));
    var edition = (string)sqlEditionRegistry.GetValue("Edition");
    Console.WriteLine("Instance {0}, RealName {2}, - Edition: {1}", instance, edition, realNameInstanse);
}

Here is edition list based on list at the end of this article :

• Standard Edition

• 64-bit Edition

• Express Edition

• Developer Edition

• Enterprise Edition

• Workgroup Edition

• Standard

• Analysis Services

• Developer

• Enterprise

• Enterprise Evaluation

• Express

• Express with Advanced Services

• Integration Services

• Datacenter

• Reporting Services

• Standard Edition for Small Business

• Web

• Workgroup

• Business Intelligence

• Enterprise Core

Answer 4

To check sql server version, you can query for @@version .

execute select @@version

The output consists of:

1. SQL server version
2. SQL server edition
3. Latest patch installed
4. Computer's processor (32 bit or 64 bit)