箱式电阻炉加热元件:Select min(id) as id,bid from zhan group by bid

Select min(id) as id,bid from zhan group by bid select distinct id ,num=sum(cast((num) as int) from sy order by id desc select * from table1 where id in (select id from table2)， select @id=id from [dbo].[table1] where id > -1 order by id ASC select * from buy where id= 261 stb="select top 1 id FROM our order by id " sql="select * from exam_subject where id="& cint(id(j))是什么意思? sql="select * from main where id="&id 这句啥意思 sql="select * from main where id="&id 这句啥意思 sql="select * from spzs where id="+cstr(id)+" order by id desc" 意思