如何在Powershell脚本中将变量传递给bcp命令

Question

I am creating a string that I would like to pass to the bcp command from within a PowerShell script. Here is the code that creates the string

$fullFilePath = (pwd).path + "\$db.$table" + ".dat"
$copyExecString = "bcp $db.$table out $fullFilePath -E -N -Slocalhost"

I can paste the Write-host result of this into a command prompt and it runs just fine, but it won't work as follows:

$fullFilePath = (pwd).path + "\$db.$table" + ".dat"
$copyExecString = "$db.$table out $fullFilePath -E -N -Slocalhost"
bcp $copyExecString

I also tried using the ampersand character before calling the bcp command, but to no avail

Any ideas on how to achieve this functionality would be greatly appreciated

Answer 1

通过用空格将参数分开来标记它，而不是单个字符串：

& bcp $db.$table out $fullFilePath -E -N -Slocalhost

Answer 2

您可以使用Invoke-Expression cmdlet确保在执行之前解析要执行的内容：

Invoke-Expression "bcp $copyExecString"