Running SQL Server Queries from PowerShell
PowerShell provides several methods for executing SQL Server queries from a local machine. One versatile approach is to utilize .NET's built-in classes for accessing databases.
The following PowerShell function, Invoke-SQL, enables you to execute arbitrary queries against a SQL Server instance:
function Invoke-SQL { param( [string] $dataSource = ".\SQLEXPRESS", [string] $database = "MasterData", [string] $sqlCommand = $(throw "Please specify a query.") ) $connectionString = "Data Source=$dataSource; " + "Integrated Security=SSPI; " + "Initial Catalog=$database" $connection = new-object system.data.SqlClient.SQLConnection($connectionString) $command = new-object system.data.sqlclient.sqlcommand($sqlCommand,$connection) $connection.Open() $adapter = New-Object System.Data.sqlclient.sqlDataAdapter $command $dataset = New-Object System.Data.DataSet $adapter.Fill($dataSet) | Out-Null $connection.Close() $dataSet.Tables }
To execute a query using this function:
- Replace the default values for $dataSource, $database, and $sqlCommand with your specific values.
- Call the function with the modified parameters.
For instance, to execute the query "SELECT * FROM Customers" on a local instance using the "Northwind" database:
$results = Invoke-SQL -Database 'Northwind' -SqlCommand "SELECT * FROM Customers"
The $results variable will contain a table object with the query results.
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