Senin, 03 Maret 2014

[MS_AccessPros] sql difference on "sum"

 

Pros, I’m trying to do a simple sum and am getting some strange results.  Why does this total sum up like it does?

SELECT CompletionsTucson.EmployeeNumber, CourseHistoryTucson.Duration, Left([SkillRequired],3) AS Expr1

FROM EmployeesTucson INNER JOIN ((CourseHistoryTucson INNER JOIN CompletionsTucson ON CourseHistoryTucson.CourseHistID = CompletionsTucson.CourseHistID) INNER JOIN EmployeeRequirementsTucson ON CompletionsTucson.EmployeeNumber = EmployeeRequirementsTucson.EmployeeNumber) ON EmployeesTucson.EmployeeNumber = CompletionsTucson.EmployeeNumber

GROUP BY CompletionsTucson.EmployeeNumber, CourseHistoryTucson.Duration, Left([SkillRequired],3), CompletionsTucson.CompleteDate

HAVING (((CompletionsTucson.EmployeeNumber)=18702) AND ((Left([SkillRequired],3))="AMT") AND ((CompletionsTucson.CompleteDate)>#12/31/2013#));

 

Giving results:

Query1

EmployeeNumber

Duration

Expr1

18702

0.75

AMT

18702

1

AMT

18702

1

AMT

18702

1.5

AMT

 

To something I’m expecting for a 4.25: of

SELECT CompletionsTucson.EmployeeNumber, Sum(CourseHistoryTucson.Duration) AS SumOfDuration, Left([SkillRequired],3) AS Expr1

FROM EmployeesTucson INNER JOIN ((CourseHistoryTucson INNER JOIN CompletionsTucson ON CourseHistoryTucson.CourseHistID = CompletionsTucson.CourseHistID) INNER JOIN EmployeeRequirementsTucson ON CompletionsTucson.EmployeeNumber = EmployeeRequirementsTucson.EmployeeNumber) ON EmployeesTucson.EmployeeNumber = CompletionsTucson.EmployeeNumber

GROUP BY CompletionsTucson.EmployeeNumber, Left([SkillRequired],3), CompletionsTucson.CompleteDate

HAVING (((CompletionsTucson.EmployeeNumber)=18702) AND ((Left([SkillRequired],3))="AMT") AND ((CompletionsTucson.CompleteDate)>#12/31/2013#));

 

Query1

EmployeeNumber

SumOfDuration

Expr1

18702

2

AMT

18702

2

AMT

18702

1.5

AMT

18702

3

AMT

 

 

Respectfully,

Liz Ravenwood

Programmer / Analyst

B/E Aerospace | Super First Class Environments

 

1851 S Pantano Road | Tucson, Arizona 85710

Office +1.520.239.4808 |

beaerospace.com

Passion to Innovate. Power to Deliver

 



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