select Student.S#,Student.Sname,count(SC.C#),sum(score) from Student left Outer join SC on Student.S#=SC.S# group by Student.S#,Sname (责任编辑:IT) |
select Student.S#,Student.Sname,count(SC.C#),sum(score) from Student left Outer join SC on Student.S#=SC.S# group by Student.S#,Sname (责任编辑:IT) |
数据库编译器产生执行计划,决定着SQL的实际执行方式。但是编译器只是尽力服务,所有...
错误提示:无法为该请求检索数据。 (Microsoft.SqlServer.Management.Sdk.Sfc) 有关帮...