Creating a database using Power Shell and SQLServer Management Objects

Review this previous post    http://hodentekmsss.blogspot.com/2014/11/accessing-sql-server-via-smo-using.html

In the above post you will get an introduction to Power Shell and SQL Server maangement Objects. You also learn how to access the SQL Server and carry out a few tasks like listing out all the databases.

In this post you will learn how to create a new database in SQL Server using SMO and Power Shell. Using Transact-SQL or the SSMS you can easily create a database. Using PowerShell is another option to create a database using a script.

Launch Power Shell by right clicking the instnace node as shown.

PS_SMO_DB01

This ensures that you have access to the SQLServer's SMO library.

You will be launching the shell with the following line:
PS SQLSERVER:\SQL\HODENTEK8\REGENCYPARK>

Enter the following code one line at a time. After you enter the line and click enter you may not get any message. Continue with the other lines.

$server= new-object Microsoft.Sqlserver.management.smo.server 'Hodentek8\RegencyPark'
$dbname= "Feb6"
$db=new-object  Microsoft.Sqlserver.management.smo.Database ($server,$dbname)
$db.Create()

When the final command line is processed you will have created a new database Feb6 in your SQL Server Instance as shown. It will have default settings.

PS_SMO_DB02

Accessing SQL Server via SMO using PowerShell - A quick workout

In order to understand SQL Server the surest way is to get to understand the SQL Server Management Objects known by its acronym 'SMO'. You can programmatically access and manage SQL Servers with this object model.

I have described with code listing as to how you may access Azure SQL Database in my comprehensive Azure SQL Database related book.
"A step-by-step procedure to connect to SQL Azure using SMO" is described on page 119, Chapter 3 of this book.
Microsoft SQL Azure: Enterprise Application Development, Packt Publishing,  Dec 2010.

SMO is the foundation using which the SSMS was built. The name space for the SMO is Microsoft.SqlServer.SMO.

In a previous post, I showed you how to run PowerShell in SQL Server Management Studio. Here is a quick screen shot to refresh your memory.

As you can imagine the SMO object model is quite large and starts off with the Server at the top. This image shows only a part of this object model.

You should be able to access the complete model at this link:
http://msdn.microsoft.com/en-us/library/ms162209.aspx

In order to access SMO using PowerShell you need to load the assembly as shown in the next image.

With the following you can get all the members as shown.

Once you do that you can access the top-level object, the Server.

SMO is object based and hierarchical. You define the SQL Server as a new object using the next listing where "servername" is your computer or the server and instance name is the SQL Server instance. In the present listing it is "Hodentek\RegencyPark"
-----------
PS C:\Users\Jayaram> $sqlServer = new-object ("Microsoft.SqlServer.Management.Smo.Server") "Hodentek8\RegencyPark"

Since you defined  the server, you can find its version as shown in the following listing:
----
PS C:\Users\Jayaram> $sqlServer.version
Major  Minor  Build  Revision
-----  -----  -----  --------
11     0      2218   -1

---------------
The next two lines of code finds the status of the server as well as the root directory of the instance. 
-------------
PS C:\Users\Jayaram> $sqlserver.status
Online
PS C:\Users\Jayaram> $sqlserver.RootDirectory
c:\Program Files\Microsoft SQL Server\MSSQL11.REGENCYPARK\MSSQL
----------
Accessing the databases:

Databases are also objects and you need declare a variable for them as shown here:
----
PS C:\Users\Jayaram> $sqlDatabase=$sqlServer.Databases
----
The above declaration will not display a response but you have indeed declared the variable $sqlDatabase
Since there are more than one database, you need to get information from this collection as shown in the next listing:
-------------
PS C:\Users\Jayaram> foreach($sqlDatabse in $sqlServer.Databases){$sqlDatabase.name}
AdventureWorks2012
master
model
msdb
ReportServer$REGENCYPARK
ReportServer$REGENCYPARKTempDB
tempdb

These are the databases in my SQL Server Instance named RegencyPark.

In a future post we will see how to query database and other tasks