... P where C.SODH=P.SODH) begin select @SODH = SODH from DONDH D where (select sum(SLDAT)from CTDONDH CT where D.SODH=CT.SODH)= (select sum(SLNHAP) from PNHAP P,CTPNHAP C where D.SODH=P.SODH ... D.SODH,NGADH=convert(char(10),NGAYDH,103),MANHACC,SL_CHITIET =co unt(C.SODH) from DONDH D,CTDONDH C where D.SODH=C.SODH group by D.SODH,convert(char(10),NGAYDH,103),MANHACC order by count(C.SODH) ... exists (select * from CTDONDH where SODH=@SODH) begin if exists (select * from CTDONDH where MAVTU=@MAVT) begin select @SLDAT=SLDAT from CTDONDH where SODH=@SODH and MAVTU=@MAVT end...