sql 事务处理 与 try catch

 begin transaction tr
    declare @error int;
    set @error=0;
    select * from Car_Brand
    set @error=@error+@@ERROR
    select 1/0
    set @error=@error+@@ERROR
    select * from AREA
    set @error=@error+@@ERROR
    print 'i have executed!'
    set @error=@error+@@ERROR

    print '@@error:'+cast(@error as varchar(50))
    if(@error<>0)
      begin
       print 'executed failed';
       rollback transaction tr
      end
    else
      begin
       print 'executed success';
       commit transaction tr
      end

普通事务

 begin  try
 begin transaction tr

    select * from Car_Brand
    update car_log set [reason]='ceshiceshiceshi' where [modelid]=557;
    select 1/0
    print 'i have executed!'
    select * from AREA

    print 'executed success';
    commit transaction tr

 end try
 begin catch
   print 'executed failed';
   rollback transaction tr
 end catch

事务结合 try catch