sqlserver多行转一行
SELECT A.OrderIds FROM (SELECT STUFF((SELECT ',' + OrderId FROM InvoiceSingle FOR XML PATH('')),1,1,'') AS OrderIds FROM InvoiceSingle )A GROUP BY OrderIds
SELECT A.OrderIds FROM (SELECT STUFF((SELECT ',' + OrderId FROM InvoiceSingle FOR XML PATH('')),1,1,'') AS OrderIds FROM InvoiceSingle )A GROUP BY OrderIds