Powershell and SQL Server Management -2

Here are some technical details and examples of Powershell commands that you can use in SQL Server Management Studio (SSMS):

Connecting to a SQL Server instance: To connect to a SQL Server instance using Powershell, you can use the New-Object cmdlet to create a new SQL Server Management Object (SMO) connection. Here is an example:

$serverName = "MyServer\InstanceName"

$server = New-Object Microsoft.SqlServer.Management.Smo.Server -ArgumentList $serverName

Executing SQL scripts: To execute a SQL script using Powershell, you can use the Invoke-Sqlcmd cmdlet. Here is an example:

Invoke-Sqlcmd -InputFile "C:\Scripts\MyScript.sql" -ServerInstance "MyServer\InstanceName"

Managing SQL Server Agent jobs: To create a new SQL Server Agent job using Powershell, you can use the New-Job cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

$server = New-Object Microsoft.SqlServer.Management.Smo.Server -ArgumentList $serverName

$job = New-Object Microsoft.SqlServer.Management.Smo.Agent.Job

$job.Name = "My Job"

$job.Description = "This is my job"

$job.Create()

To view a list of all SQL Server Agent jobs on a server, you can use the Get-Job cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

$server = New-Object Microsoft.SqlServer.Management.Smo.Server -ArgumentList $serverName

Get-Job -ServerInstance $server

Monitoring SQL Server performance: To view the current status of SQL Server services using Powershell, you can use the Get-Service cmdlet. Here is an example:

Get-Service -Name "MSSQLSERVER"

To view the current CPU usage of a SQL Server instance, you can use the Get-Counter cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

Get-Counter -Counter "\Processor(_Total)\% Processor Time" -ComputerName $serverName -SampleInterval 1 -MaxSamples 10

Backing up and restoring databases: To create a backup of a database using Powershell, you can use the Backup-SqlDatabase cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

$databaseName = "MyDatabase"

$backupFile = "C:\Backups\MyDatabase.bak"

Backup-SqlDatabase -ServerInstance $serverName -Database $databaseName -BackupFile $backupFile

To restore a database from a backup using Powershell, you can use the Restore-SqlDatabase cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

$databaseName = "MyDatabase"

$backupFile = "C:\Backups\MyDatabase.bak"

Restore-SqlDatabase -ServerInstance $server

Managing database security: To create a new user in a database using Powershell, you can use the New-SqlLogin cmdlet. Here is an example:

$serverName = "MyServer\InstanceName"

$databaseName = "MyDatabase"

$username = "MyUser"

$password = "MyPassword"

New-SqlLogin -ServerInstance $serverName -LoginName $username -Password $password

Importing and exporting data: To import data from a CSV file into a table using Powershell, you can use the Import-Csv and Invoke-Sqlcmd cmdlets. Here is an example:

$serverName = "MyServer\InstanceName"

$databaseName = "MyDatabase"

$tableName = "MyTable"

$csvFile = "C:\Data\MyData.csv"

$data = Import-Csv -Path $csvFile

$query = "INSERT INTO $tableName VALUES (@$($data[0].PSObject.Properties.Name))"

foreach ($row in $data) {

Invoke-Sqlcmd -ServerInstance $serverName -Database $databaseName -Query $query -InputObject $row

}

Automating tasks: To schedule a regular backup using Powershell, you can use the New-SqlAgentJob and Add-SqlAgentJobSchedule cmdlets. Here is an example:

$serverName = "MyServer\InstanceName"

$databaseName = "MyDatabase"

$backupFile = "C:\Backups\MyDatabase.bak"

$scheduleName = "My Schedule"

$scheduleInterval = "00:30:00"

$job = New-SqlAgentJob -ServerInstance $serverName -Name "My Backup Job" -JobDefinition "BACKUP DATABASE $databaseName TO DISK = '$backupFile'"

$schedule = New-SqlAgentJobSchedule -Name $scheduleName -FrequencyType "Daily" -FrequencyInterval 1 -ActiveStartTime "00:00:00" -ActiveEndTime "23:59:59" -FrequencyRecurrenceFactor 1 -ScheduleInterval $scheduleInterval

Add-SqlAgentJobSchedule -InputObject $job -JobSchedule $schedule

To send an email notification when a certain event occurs using Powershell, you can use the Send-MailMessage cmdlet. Here is an example:

$smtpServer = "smtp.example.com"

$to = "recipient@example.com"

$from = "sender@example.com"

$subject = "SQL Server Event"

$body = "An event has occurred in SQL Server"

Send-MailMessage -SmtpServer $smtpServer -To $to -From $from -Subject $subject -Body $body