select - Return MAX After Selection -

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i new sql queries , having issue getting max of column speedo below current query

select  tblvehicle.rego ,tbljob.speedo  ,tbljob.dateentered tbljob inner join tblvehicle   on tbljob.vehicle_id = tblvehicle.id    jobtype_id = 2    order rego

which outputs

rego    speedo  dateentered 000jkc  147729  2010-05-10 10:56:55.040 000jkc  150145  2010-06-02 13:57:15.470 000jkc  169553  2011-01-06 12:24:09.143 000jkc  155149  2010-07-21 14:58:20.777 000jkc  157882  2010-09-17 16:39:48.480 000jkc  165660  2010-11-29 08:20:39.453 000jkc  164339  2010-11-18 16:19:19.213 000jkc  155149  2010-08-11 06:16:28.180 000rqd  65  2011-11-21 09:27:31.693 000rqd  6978    2012-03-06 15:18:06.987 000rqd  6766    2012-02-24 13:28:47.603 000rqd  12130   2012-08-28 09:29:18.027 000rqd  12145   2012-08-27 14:57:17.330 000rqd  21550   2013-04-15 19:30:30.160 000rqd  23640   2013-05-22 16:16:33.880

now max(speedo) of each rego only.

the max() function returns largest value of selected column.

select  tblvehicle.rego , max( tbljob.speedo ) ,tbljob.dateentered tbljob inner join tblvehicle   on tbljob.vehicle_id = tblvehicle.id    jobtype_id = 2    order rego

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