如何将列映射到csv文件中的另一个列值？

Question

假设我有一个csv文件，如下所示：

role    member
role1   memberA
role1   memberB
role2   memberC
role3   memberX
role3   memberY
role3   memberC

我想将数据库中角色的所有成员添加到数据库中

$csvR = (Import-Csv $csvFile).role

        foreach ($Role in $csvR)
        {
            foreach ($Member in $Role) 
            {   
                & ".\AddMembers.ps1" -AddtoDatabaseOnOneServer "$Role" "$Member" "$DatabaseName" "$ServerInput"
            } 
        }

此循环是否可以识别例如将memberA添加到role1，将memberB添加到role1，将memberC添加到role2，等等？换句话说，此内循环是否正确：foreach ($Member in $Role)

Answer 1

这是一个演示如何使用Group-Object cmdlet通过分组属性遍历导入的CSV文件中的项目的演示。 [咧嘴]

在give person行中，您可以将呼叫添加到每个人的脚本中，也可以收集该.Role的所有人的姓名并将其全部添加。

# fake reading in a CSV file
#    in real life, use Import-CSV
$InStuff = @'
role, member
role1, memberA
role1, memberB
role2, memberC
role3, memberX
role3, memberY
role3, memberC
'@ | ConvertFrom-Csv

$GroupedIS = $InStuff |
    Group-Object -Property Role

foreach ($GIS_Item in $GroupedIS)
    {
    foreach ($GG_Item in $GIS_Item.Group)
        {
        'give person [ {0} ] the role [ {1} ]' -f $GG_Item.Member, $GG_Item.Role
        }
    }

输出...

give person [ memberA ] the role [ role1 ]
give person [ memberB ] the role [ role1 ]
give person [ memberC ] the role [ role2 ]
give person [ memberX ] the role [ role3 ]
give person [ memberY ] the role [ role3 ]
give person [ memberC ] the role [ role3 ]