powershell connects to sqlserver

How to issue sql query to sql server database by using powershell ?

Here is the Link : http://sev17.com/2010/07/making-a-sqlps-module/

Steps:

1) Make a module 

    1.1) copy file/folder under 100/Binn to powershell/vx.0/modules/sqlps

• en
• Microsoft.sqlServer.Management.PSProvider.dll
• Microsoft.sqlServer.Management.PSSnapins.dll
• sqlProvider.Format.ps1xml
• sqlProvider.Types.ps1xml

    1.2) create a file named "sqlps.psd1"

@{

ModuLeversion="0.0.0.1"
Description"A Wrapper for Microsoft's sql Server PowerShell Extensions Snapins"
Author"Chad Miller"
copyright"© 2010,Chad Miller,released under the Ms-PL"
CompanyName"http://sev17.com"
CLRVersion"2.0"
FormatsToProcess"sqlProvider.Format.ps1xml"
nestedModules"Microsoft.sqlServer.Management.PSSnapins.dll","Microsoft.sqlServer.Management.PSProvider.dll"
requiredAssemblies"Microsoft.sqlServer.Smo""Microsoft.sqlServer.Dmf""Microsoft.sqlServer.sqlWmiManagement""Microsoft.sqlServer.ConnectionInfo""Microsoft.sqlServer.SmoExtended""Microsoft.sqlServer.Management.RegisteredServers""Microsoft.sqlServer.Management.Sdk.Sfc""Microsoft.sqlServer.sqlEnum""Microsoft.sqlServer.RegSvrEnum""Microsoft.sqlServer.WmiEnum""Microsoft.sqlServer.ServicebrokerEnum""Microsoft.sqlServer.ConnectionInfoExtended""Microsoft.sqlServer.Management.Collector""Microsoft.sqlServer.Management.CollectorEnum"
TypestoProcess"sqlProvider.Types.ps1xml"
ScriptsToProcess"sqlps.ps1"
}

    1.3) craete a file named "sqlps.ps1"

Set-Variable -scope Global -name sqlServerMaximumChildItems -Value 0
-name sqlServerConnectionTimeout 30
-name sqlServerIncludeSystemObjects $false
-name sqlServerMaximumTabCompletion 1000

2) import-module sqlPS 

Now you can issues query to sql server by using invoke-sqlcmd -query xxxx -database xxxx -serverinstance xxxx