Group Concat MS SQL
SELECT TOP 1000 T.orderItemId , STUFF(( SELECT ‘,’+(attribute_name+‘: ‘+attribute_value) FROm qsorderoptions where qsorderoptions.orderItemId =T.orderItemId FOR XML PATH(”)) , 1 , 1 , ” ) AS Feld FROM qsorderoptions As T –GROUP BY T.product_id GROUP BY T.orderItemId