asked on

how to get fastest lap time and driver iD per race

hello as per title: how to get fastest lap time and driver iD per race

if i run

SELECT * FROM F1database.lapTimes

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i get

# raceId, driverId, lap, position, time, milliseconds
'841', '20', '1', '1', '1:38.109', '98109'
'841', '20', '2', '1', '1:33.006', '93006'
'843', '20', '3', '1', '1:32.713', '92713'

actual results in attached file

I would love result of

raceid, fastesttime, driverId

so i 10 races i would get 10 results if 700 races i would get 700 results..... hope that all makes sense and that you can help
result.csv

PortletPaul

what is the actual data type of the lap time column?
are all the other columns int (integers)?
what version of MySQL are you using?

PortletPaul

for this sample:

CREATE TABLE lapTimes
    (`raceId` int, `driverId` int, `lap` int, `position` int, `time` varchar(12), `milliseconds` int)
;
    
INSERT INTO lapTimes
    (`raceId`, `driverId`, `lap`, `position`, `time`, `milliseconds`)
VALUES
    (841, 20, 1, 1, '1:38.109', 98109),
    (841, 20, 2, 1, '1:33.006', 93006),
    (843, 20, 3, 1, '1:32.713', 92713)

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select
l.*
from lapTimes l
inner join (
        select
              raceId
            , driverId
            , min(milliseconds) milliseconds
        from lapTimes
        group by
              raceId
            , driverId
  ) m on l.raceId = m.raceId and l.driverId = m.driverId
      and l.milliseconds = m.milliseconds
;

| raceId | driverId | lap | position |     time | milliseconds |
|--------|----------|-----|----------|----------|--------------|
|    841 |       20 |   2 |        1 | 1:33.006 |        93006 |
|    843 |       20 |   3 |        1 | 1:32.713 |        92713 |

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select
      raceId
    , driverId
    , sum(milliseconds) / 1000 race_seconds
from lapTimes
group by
      raceId
    , driverId
;
| raceId | driverId | race_seconds |
|--------|----------|--------------|
|    841 |       20 |      191.115 |
|    843 |       20 |       92.713 |

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select
  `time`
, left(`time`,locate(':',`time`)-1) mins
, substr(`time`,locate(':',`time`)+1,2)  secs
, right(`time`, length(`time`) - locate('.',`time`)) hundedths
, milliseconds / 1000
from lapTimes

|     time | mins | secs | hundedths | milliseconds / 1000 |
|----------|------|------|-----------|---------------------|
| 1:38.109 |    1 |   38 |       109 |              98.109 |
| 1:33.006 |    1 |   33 |       006 |              93.006 |
| 1:32.713 |    1 |   32 |       713 |              92.713 |

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ASKER CERTIFIED SOLUTION

bcnagel

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PortletPaul

darn, for fastest laptime one ignores the driverid.... oh well

bcnagel

Yep, I'm guessing we ignore the driverId, Paul. On the other hand, until we hear back from James we're just making our best guesses as to what he's really looking for. :-)

James Murrell

ASKER

wow thanks, sorry i had to sleep.

i get data from http://ergast.com/mrd/db/

I will review these later today. I am in meetings and will get back to you guys

James Murrell

ASKER

Hello all great answer i will be accepting bcnagel answer as it it the one that makes sense to me: Basically I understand it....

big thanks guys

James Murrell

ASKER

great answer, one i could read and understand.... thanks