$query=@"

USE [ControlCenter]
DECLARE @res VARCHAR(MAX)=''

SELECT @res = @res + ',"'+[s].[SE_DNS]+'"'
FROM [dbo].[Server] s
    JOIN [dbo].[Entity] e ON [e].[EN_id] = [s].[SE_entity]
WHERE e.[EN_id] IN (
1, --sun
2, --ama
21 --cvi
)
AND [s].[SE_DNS] NOT LIKE '%REF____.%'
AND (
    s.[SE_end_prod_date] IS NULL 
    OR s.[SE_end_prod_date] > CURRENT_TIMESTAMP
)
ORDER BY s.[SE_entity], [s].[SE_OU_code];

SELECT STUFF(@res,1,1,'') as OU_list

"@

$machines = Invoke-Sqlcmd -ServerInstance HCIMON -Database ControlCenter -Query $query

$machines | Format-Table