select [A].xm,[A].xb,[B].bm,[C].nl from [A] INNER JOIN [B] on [A].id=[B].xyid INNER JOIN [C] on [A].sid=[C].idselect [A].xm,[A].xb,[B].bm,[C].nl from [A] IN
select [A].xm,[A].xb,[B].bm,[C].nl from [A] INNER JOIN [B] on [A].id=[B].xyid INNER JOIN [C] on [A].sid=[C].idselect [A].xm,[A].xb,[B].bm,[C].nl from [A] IN