Question

time Select Query - select between two times

Asked by: jaxrpc

hi,
assuming if i am having this set of times, how do i query which alphabet the current time falls within.
exmaple..... 23:54 would return me C

A 08:00    15:59
B 16:00     23:50
C  23:51    07:59

thanks

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Asked On
2007-06-26 at 03:31:28ID22657869
Tags

select

,

between

,

query

,

times

Topic

MS SQL Server

Participating Experts
4
Points
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Comments
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Answers

 

by: Devil666Posted on 2007-06-26 at 03:36:18ID: 19362348

hi there,

try the following

SELECT * FROM Table
WHERE LEFT(RIGHT(CONVERT(VARCHAR, GETDATE(), 126), 12), 8) BETWEEN CONVERT(DATETIME, TIME1) AND CONVERT(DATETIME, TIME2)

hth

 

by: fatalXceptionPosted on 2007-06-26 at 03:42:30ID: 19362368

try this:
select
case
 when  left(convert(varchar,Getdate(),8),5)  between '08:00' and '15:59' then 'A'
  when left(convert(varchar,Getdate(),8),5) between '16:00' and '23:50' then 'B'
else 'C' end

You can find a much more comprehensive user defined function for formatting times here:
http://sqlserver2000.databases.aspfaq.com/can-i-make-sql-server-format-dates-and-times-for-me.html

 

by: jaxrpcPosted on 2007-06-26 at 03:43:39ID: 19362374

hI,

I have tried but it won't work when time is  15:59 or 23:50 or 07.59 which are the ending time for each record

 

by: twoboatsPosted on 2007-06-26 at 03:47:58ID: 19362393

What arw the datatypes for your time columns?

 

by: Devil666Posted on 2007-06-26 at 03:48:37ID: 19362398

hi,

try this


SELECT GETDATE(), * FROM TEST
WHERE
LEFT(RIGHT(CONVERT(VARCHAR, GETDATE(), 126), 12), 5) >= CONVERT(DATETIME, TIME1) AND
LEFT(RIGHT(CONVERT(VARCHAR, GETDATE(), 126), 12), 5) <= CONVERT(DATETIME, TIME2)

this is the result
(No column name)      id      time1      time2
2007-06-26 15:59:07.450      a      08:00      15:59

hth

 

by: twoboatsPosted on 2007-06-26 at 03:51:09ID: 19362411

Devil - 15:59:07.450 isn't between 08:00:00 and 15:59:00

 

by: Devil666Posted on 2007-06-26 at 03:52:38ID: 19362421

yes, but if you noticed, there isnt a place for that one minute to be placed,

so its easier to place it at the 15:59 spot....

 

by: jaxrpcPosted on 2007-06-26 at 04:15:20ID: 19362524

my datatype is varchar..but it won't work even converting it to datetime 8

 

by: twoboatsPosted on 2007-06-26 at 04:22:09ID: 19362556

Devil - true, but misleading?

jaxrpc - what results do you get from running what Devil posted?

 

by: tncbbthositgPosted on 2007-06-26 at 05:45:28ID: 19363066

Can you make two rows for C?  Id est, 23:51 - 23:59 and 00:00 - 07:59?

 

by: tncbbthositgPosted on 2007-06-26 at 06:05:02ID: 19363214

Okay, I think this is the best way to go about it, but I'm not certain.  Given that you've got a granularity of one minute, I think your time should be in minutes.  Thus, if you were to take this query:

SELECT
  Alphabet,
  CurrentTime = DATEADD(mi, DATEDIFF(mi, DATEDIFF(d, 0, GETDATE()), GETDATE()), 0),
  StartTimeGroup1 = CAST(StartTime AS DateTime),
  EndTimeGroup1 = CAST(CASE WHEN EndTime < StartTime THEN '23:59' ELSE EndTime END AS DateTime),
  StartTimeGroup2 = CAST(CASE WHEN EndTime < StartTime THEN '00:00' ELSE NULL END AS DateTime),
  EndTimeGroup2 = CAST(CASE WHEN EndTime < StartTime THEN EndTime ELSE NULL END AS DateTime)
FROM Times

and modify it slightly, you'll get:

SELECT
  Alphabet
FROM Times
WHERE
  DATEADD(mi, DATEDIFF(mi, DATEDIFF(d, 0, GETDATE()), GETDATE()), 0)
    BETWEEN CAST(StartTime AS DateTime)
      AND   CAST(CASE WHEN EndTime < StartTime THEN '23:59' ELSE EndTime END AS DateTime)
 
  OR

  DATEADD(mi, DATEDIFF(mi, DATEDIFF(d, 0, GETDATE()), GETDATE()), 0)
    BETWEEN CAST(CASE WHEN EndTime < StartTime THEN '00:00' ELSE NULL END AS DateTime)
      AND   CAST(CASE WHEN EndTime < StartTime THEN EndTime ELSE NULL END AS DateTime)
 

This should work for all times and should be adaptable should you decide to change your coding scheme.

TNC

 

by: tncbbthositgPosted on 2007-06-26 at 06:47:06ID: 19363587

By the way, that won't work with every possible combination of starttime and endtime.  In some cases, the logic for spanning days would have to change a little, but it should be okay under most conditions.

20120131-EE-VQP-002

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