getting a start date and end date from different rows MySQL

I have a query, in that query I get the start time and a toolnumber
SELECT UploadTime as 'StartTime', ToolNumber
FROM ToolAssemblies
WHERE ControllerSn = 1024);

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What I want is to take this:(the query above)
preresultAnd make this:(start date is the first date and the enddate is the firstdate of the next record with a new tool number
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Haris DulicCommented:

try this:

select toolNumber, min(uploadtime) as startdate, max(uploadtime) as enddate

from precont

group by toolNumber

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r3nderAuthor Commented:
Thanks Samo
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