Date Math

Jan 9, 2008

Below is my table layout, query, and results. I need to perform some date math to display how much time is elapsed between locations as patients are checked into each care_unit. I believe I could use the unique careunit_key but am not sure how to go about this.

[srm].[CDMAB_CAREUNITS]

[CAREUNIT_KEY] [decimal](37, 0) NOT NULL,

[EPISODE_KEY] [decimal](38, 0) NULL,

[CARE_UNIT] [char](20) NULL,

[ROOM_NO] [char](5) NULL,

[BED_NO] [char](5) NULL,

[DATE_IN] [datetime] NULL,

[TIME_IN] [char](6) NULL


select

cu.careunit_key,

cu.care_unit,

convert(nvarchar,e.ADMISSION_DATE, 101) as Admit_Date,

convert(nvarchar,e.EPISODE_DATE, 101) as Discharge_Date,

convert(nvarchar,cu.date_in,101) as date_in,

substring(cu.time_in, 1,5) as time_in,

convert(nvarchar,cu.date_in,101) +

convert(datetime,substring(cu.time_in, 1,5)) as date_time_in

FROM srm.episodes e

inner join srm.CDMAB_CAREUNITS cu on cu.episode_key = e.episode_key

inner join srm.item_header ih on ih.item_key = e.episode_key

inner join srm.patients p on p.patient_key = ih.logical_parent_key

where e.account_number = '11111777777'














CAREUNIT_KEY
CARE_UNIT
ADMIT_DATE
DISCHARGE_DATE
DATE_IN
TIME_IN
DATE_TIME_IN

1488831
3
12/10/2007
12/11/2007
12/10/2007
3:00
12/10/07 3:00

1498258
S4C
12/10/2007
12/11/2007
12/10/2007
5:54
12/10/07 5:54

1498406
SREC
12/10/2007
12/11/2007
12/10/2007
11:05
12/10/07 11:05

1498472
S6W
12/10/2007
12/11/2007
12/10/2007
12:37
12/10/07 12:37








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Table: QuizMaster

ID - Integer - Auto
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Table: Students
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Code Block

SELECT Students.StudentName,


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AS

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DECLARE @QuestionsCorrect as Integer;
DECLARE @PercentCorrect as Float;

set @TotalQuestionsAsked = select COUNT(*)FROM QuizMaster;
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select @QuestionsCorrect as TotalCorrect, @StudentName as Student, @TotalQuestionsAsked as NumQuestions, @PercentCorrect as CorrectPct;

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