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converting text to datetime

Posted on 2014-04-11
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Last Modified: 2014-04-14
hi experts,
 
I the following string in a sql select query:

Convert(varchar(12),DeadlineDate,107)+" "+Convert(varchar(5),DeadlineTime, 108) Deadline

this is merging a date and time from the two datetime fields to provide a single formatted datetime on a web page.

I am being asked to order on this end datetime (Deadline) which is causing me problems since it is now text. Can I convert the result back to a datetime somehow?
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Question by:forsters
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4 Comments
 
LVL 22

Accepted Solution

by:
Steve Wales earned 500 total points
ID: 39993949
Is the order by happening at the same time as the query ?  Or after you've done the convert ?

If it's part of the same query you can do:

select ....
, Convert(varchar(12),DeadlineDate,107)+" "+Convert(varchar(5),DeadlineTime, 108) Deadline
, ....
from yourtable
order by DeadlineDate, DeadlineTime
0
 

Author Comment

by:forsters
ID: 39994013
actually my colleague has just solved this for me with the following in the order by:

DATEADD(day, 0, DATEDIFF(day, 0, deadlinedate)) + DATEADD(day, 0 - DATEDIFF(day, 0, deadlinetime), deadlinetime).

many thanks for your reply I had also tried to resolve in the way you suggest but deadlinetime is actually storing a date ( even though it isn't required) and that date was throwing the ordering out on occasions where it conflicted with the deadlinedate.

I will give points regardless - apreciated
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LVL 49

Expert Comment

by:PortletPaul
ID: 39995463
?? maybe just cast the time field to time without date

order by DeadlineDate, cast(DeadlineTime as time)
0
 

Author Comment

by:forsters
ID: 39998481
ha, very good yes that would probably do it, i'll have a go later...
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