问题
SQL Server newbie here - I'm trying to access the localdb\MSSQLLocalDB server on my computer through PowerShell with the SQLCMD utility. I'm using PowerShell v5, .NET v5.0, and The server name is (localdb)\MSSQLLocalDB when I connect to it in Microsoft SQL Server Management Studio 2014.
PS C:\> sqlcmd -S localdb\MSSQLLocalDB and PS C:\> sqlcmd -S .\localdb\MSSQLLocalDB result in this error:
Sqlcmd: Error: Microsoft ODBC Driver 11 for SQL Server : SQL Server Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF].
I queried the server name in Management Studio with SELECT @@ServerName and used that after the -S in the above command and got the same error.
PS C:\> sqlcmd -S localdb gives this error:
Sqlcmd: Error: Microsoft ODBC Driver 11 for SQL Server : Named Pipes Provider: Could not open a connection to SQL Server [53]
Other notes: I'm able to connect to the server and work with a database named testdb01 in a C# console app using System.Data.SqlClient with this connection string:
"Data Source=(localdb)\\mssqllocaldb;Initial Catalog=testdb01;Integrated Security=SSPI;"
Any ideas on where to start or how to approach this?
回答1:
Passing arguments from PowerShell to EXEs can be tricky. I think you need to escape the parens either with single quotes, which means the content is a static literal string, or the backtick escape character:
sqlcmd -S '(localdb)\MSSQLLocalDB' -Q "Select @@servername"
sqlcmd -S `(localdb`)\MSSQLLocalDB -Q "Select @@servername"
or even using a variable:
PS H:\> $myserver = '(localdb)\MSSQLLocalDB'
PS H:\> sqlcmd -S $myserver -Q "Select @@servername"
Also, if you are using sqlcmd, perhaps look at Invoke-Sqlcmd which is more native to PowerShell:
PS SQLSERVER:\> Invoke-Sqlcmd -Server $myserver -Query "Select @@servername"
来源：https://stackoverflow.com/questions/34457048/trouble-connecting-to-localdb-via-sqlcmd-in-powershell-what-is-server-instance