![]() ![]() Using ETL as an example, if most of our ETL is T-SQL, we should be careful about introducing extra tools that add more work in troubleshooting. We also want to be careful about using more tools than we need to avoid development complexity. These are examples where we may want a custom script. In some cases, we may want a custom timeout that exceeds the limit, or we may not want to allow user input for the connection string (or other details). When we have no alternative that is as quick or effective for our needs When we’re running a standard script without custom execution, like a stored procedure that executes a transform of our ETL layer, and the execution matches our flow When we need to run a test quickly, such as testing code execution outside SSMS (like executing code on TestServerOne that runs against TestServerTwo) When we consider one-line scripts, we want to consider where these tend to be the most helpful for us: For the examples in this article, we are using PowerShell version 5. PowerShell ISE is included in most versions of Windows along with the PowerShell command line. ![]() In all these examples where we call Invoke-Sqlcmd, we are not executing saved scripts, but executing these scripts through PowerShell ISE without saving the script. The latter can be useful because one-line scripts have a tendency to change in future versions of PowerShell and working with the library directly can sometimes avoid this challenge. NET objects, we’ll look at an alternative where we will be able to create a custom PowerShell script that connects to SQL Server in order to run commands. In addition, because we may want a custom script using some of the underlying. This tool can be useful in many development contexts where we need to quickly execute scripts or test code and it helps to know some of the parameters we’ll often use. PS SQLSERVER:\sql\MyServer\MyInstance\Databases\MyDatabase\Tables\dbo.PowerShell features many one-line commands for working with SQL Server, one of which is Invoke-SqlCmd. Example 3: Display selected sorted columns PS C:\> cd SQLSERVER:\sql\MyServer\MyInstance\Databases\MyDatabase\Tables\dbo.CSVTable The command prompt reflects the new location. The first command changes the location to be a table in the SQLSERVER provider. PS SQLSERVER:\sql\MyServer\MyInstance\Databases\MyDatabase\Tables\dbo.CSVTable> Read-SqlTableData Example 2: Display a whole table PS C:\> cd SQLSERVER:\sql\MyServer\MyInstance\Databases\MyDatabase\Tables\dbo.CSVTable The TopN parameter specifies the number of rows (3 in this case). This command gets the first three rows from table on the MyServer\MyInstance instance. A collection of objects.Įxamples Example 1: Get three rows from a table PS C:\> Read-SqlTableData -ServerInstance "MyServer\MyInstance" -DatabaseName "MyDatabase" -SchemaName "dbo" -TableName "MyTable" -TopN 3 Is the same as the table that this cmdlet queries. An object of type that contains one table. This cmdlet supports the follow output formats: This cmdlet can infer information such as server, database, schema, and table from its current path. You can use this cmdlet with the Windows PowerShell SQL provider. ![]() You can select which columns to read, limit the number of rows, and sort and order columns. The Read-SqlTableData cmdlet reads data stored in a table of a SQL database. In this article Syntax Read-Sql Table Data Reads data from a table of a SQL database. ![]()
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