Error when inserting strings with $( with Invoke-SqlCmd in Powershell - sql-server

Question

Setup:
CREATE TABLE MyTest (TestCol1 nchar(5))
Test:
Following work:
Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -OutputSqlErrors $True -Query "INSERT INTO MyTest VALUES ('`$5')"
Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -OutputSqlErrors $True -Query "INSERT INTO MyTest VALUES ('(5')"
Following fails with the error below:
Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -OutputSqlErrors $True -Query "INSERT INTO MyTest VALUES ('`$(5')"
Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -OutputSqlErrors $True -Query "INSERT INTO MyTest VALUES ('`$`(5')"
Error:
Invoke-Sqlcmd :
At line:1 char:1
+ Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -Ou ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ParserError: (:) [Invoke-Sqlcmd], ParserException
+ FullyQualifiedErrorId : ExecutionFailureException,Microsoft.SqlServer.Management.PowerShell.GetScriptCommand
Aftersome research I found that $( provides functionality in powershell thus is reserved. However I tried escaping the parenthesis but with no success. I've tried finding alternatative. Any ideas on how I can do this? If I use the CHAR function in SQL Server that works but it would be a pain to deal with in my code. Thank you.

Answer 1

All you need to do is disable the variables lookup in the invoke-Sqlcmd by adding -DisableVariables.
$() is use to pass in variable into the sql statements.
Invoke-Sqlcmd -InputFile $fileName -ServerInstance $serverInstance -DisableVariables
Source http://msdn.microsoft.com/en-us/library/cc281720.aspx

Answer 2

try this:
'INSERT INTO MyTest VALUES ("$(5")'
or this:
'INSERT INTO MyTest VALUES (''$(5'')'

Answer 3

The $(anyvalue) are reserved variables to be used with SQLCMD.EXE
Change the symbol $ by the sql server CHAR(36):
Invoke-Sqlcmd -Database "databasename" -ServerInstance "hostname" -OutputSqlErrors $True -Query "INSERT INTO MyTest VALUES (CHAR(36)+'(5)')"

Answer 4

The issue seems that the $( is a reserved word in Powershell thus to make this work I had use the CHAR function to store the $ (CHAR(36)). Once I did this it worked but for this project I abandoned using the Invoke-SqlCmd command and used a standard ADO.NET method. It seems that the Invoke-SqlCmd wants to parse the command and for the reserved combination continues to see the reserved word even if you escape the characters.

Answer 5

"INSERT INTO MyTest VALUES ('`$5')"
Outputs a string
INSERT INTO MyTest VALUES ('$5')
"INSERT INTO MyTest VALUES ('(5')"
Outputs a string
INSERT INTO MyTest VALUES ('(5')
"INSERT INTO MyTest VALUES ('`$(5')"
Outputs a string
INSERT INTO MyTest VALUES ('$(5')
"INSERT INTO MyTest VALUES ('`$`(5')"
Outputs a string
INSERT INTO MyTest VALUES ('$(5')
What do you want to insert? Actually '$5' or the value of the variable $5? Also, you have strange parentheses around your variable $5. Not sure if is suppose to be like that or your don't understand another important part of powershell variables? Because this a variable in a string "There are $((Get-Process).Count) processes running" too.