PowerShell使用DataSet替换文件文本

我正在尝试在PowerShell中进行一些值替换。我有一个包含一般查询的文本文件，即

-- query.sql
SELECT
     'varTableName' AS myTableName
    , COUNT(DISTINCT parmColumnName) AS myDistinctCount
    , SUM(parmColumnName2) AS mySum
FROM varDatabaseName.varSchemaName.varTableName WITH (NOLOCK);

我试图替换“var”和“parm”值。我有两个不同的数据行。在我的脚本中，我迭代第一个数据行，并使用焦点中的行进行替换。这很有效。我的问题是关于下一部分的。然后，我需要遍历包含多行的第二个数据行，并对匹配的任何值执行替换

我尝试过做这样的事情，但没有成功：

# myScript.ps1 -- does not work 
# ...
# Code here to populate $MyDataRow 
ForEach ($MyRow In $MyDataRow) {
    [string]$Query = Get-Content query.sql  | ForEach-Object {
                            $_ -replace "varTableName", $Table `
                               -replace "varDatabaseName", $MyRow.DatabaseName `
                               -replace "varSchemaName", $MyRow.SchemaName `
                               -replace "varTableName", $MyRow.TableName
                               -replace $MyOtherDataRow.SearchString, $MyOtherDataRow.ReplaceString
                            }
}

$query = Get-Content query.sql

$MyDataRow | % {
  $query = $query -replace "varDatabaseName", $_.DatabaseName `
                  -replace "varSchemaName", $_.SchemaName `
                  -replace "varTableName", $_.TableName
}

$MyOtherDataRow | % {
  $query = $query -replace $_.SearchString, $_.ReplaceString
}

然而，这在以下方面起了作用：

# myScript.ps1 -- works
# ...
# Code here to populate $MyDataRow 
ForEach ($MyRow In $MyDataRow) {
    [string]$Query = Get-Content query.sql  | ForEach-Object {
                            $_ -replace "varTableName", $Table `
                               -replace "varDatabaseName", $MyRow.DatabaseName `
                               -replace "varSchemaName", $MyRow.SchemaName `
                               -replace "varTableName", $MyRow.TableName
                            }

    ForEach($MyOtherRow In $MyOtherDataRow) {
        $Query = $Query | ForEach-Object {
            $_ -replace $MyOtherRow.SearchString, $MyOtherRow.ReplaceString
            }
    }
}

不过，我只是在学习PowerShell，所以我不知道这是否是处理此问题的最有效方法。我想知道我是否能以某种方式将第二个ForEach替换成第一个结果？最好的方法是什么

哦，如果相关的话，我使用的是PowerShell 3.0

---

欢迎任何意见。：）

我可能会这样做：

# myScript.ps1 -- does not work 
# ...
# Code here to populate $MyDataRow 
ForEach ($MyRow In $MyDataRow) {
    [string]$Query = Get-Content query.sql  | ForEach-Object {
                            $_ -replace "varTableName", $Table `
                               -replace "varDatabaseName", $MyRow.DatabaseName `
                               -replace "varSchemaName", $MyRow.SchemaName `
                               -replace "varTableName", $MyRow.TableName
                               -replace $MyOtherDataRow.SearchString, $MyOtherDataRow.ReplaceString
                            }
}

$query = Get-Content query.sql

$MyDataRow | % {
  $query = $query -replace "varDatabaseName", $_.DatabaseName `
                  -replace "varSchemaName", $_.SchemaName `
                  -replace "varTableName", $_.TableName
}

$MyOtherDataRow | % {
  $query = $query -replace $_.SearchString, $_.ReplaceString
}

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谢谢你，安斯加！我感谢你的答复