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SQL SERVER - Help with subquery - calculate max value in a range

JElster
JElster asked
on
373 Views
Last Modified: 2013-12-02
Hi.. I have the following code which is a solution to another question.
I need to include a column that gives me the job with the max miles and number of mles.
Any ideas?  

The result looks like this  (see code below)

CAR   LOGDATE          
FORD     2013-11-21             500
FORD     2013-11-22             600

I NEED TO INCLUDE THE MAX MILES AND JOB NUMBER LIKE THIS

CAR   LOGDATE            TOTAL MILES            JOB   MAX MILES
FORD     2013-11-21             500                   3            261
FORD     2013-11-22             600                   5            400

HERE'S THE CODE

declare @logbook table (Car varchar(50), LogDate DateTime, Job_no int, OdometerReadingEOJ int);

insert into @logbook values ('FORD', '21-Nov-2013', 1, 67);
insert into @logbook values ('FORD', '21-Nov-2013', 2, 239);
insert into @logbook values ('FORD', '21-Nov-2013', 3, 500);
insert into @logbook values ('FORD', '22-Nov-2013', 4, 700);
insert into @logbook values ('FORD', '22-Nov-2013', 5, 1100);



select t1.Car
     , t1.LogDate
     , MAX(t1.OdometerReadingEOJ) - IsNull((SELECT top 1 OdometerReadingEOJ FROM @logbook i2 WHERE i2.Car = t1.Car AND i2.LogDate < t1.LogDate ORDER BY i2.Job_no desc), 0)
  from @logbook t1
 group by t1.Car, t1.LogDate
 order by t1.Car, t1.LogDate
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