Question

Access Database query on VB

Asked by: awesomejohn19

I have an access database, and I want to build an interface for the database on Visual Basic Express 2008 express edition. When I add the datasource (my database), It should import all the queries. However, it does not import one of the important queries. Then when I go to the database explorer, I see my query is categorized as function rather than a query. So, I have a difficulty in using the query on my form. How can I solve this problem and use the query on the form.

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Asked On
2009-10-03 at 09:42:41ID24782579
Topics

Visual Basic Programming

,

Microsoft Access Database

Participating Experts
2
Points
500
Comments
4

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Answers

 

by: GrahamSkanPosted on 2009-10-03 at 12:44:27ID: 25486692

What is the SQL for the query?

Also, can you show how you are importing the queries into your application.

 

by: awesomejohn19Posted on 2009-10-03 at 12:53:01ID: 25486738

SELECT fundata.Fund_Name, index11.Product, fundata.Tot_Ret_12_Mo-index11.Tot_Ret_12_Mo AS [Difference of Tot_Ret_12_Mo], fundata.Tot_Ret_Annlzd_3_Yr-index11.Tot_Ret_Annlzd_3_Yr AS [Difference of Tot_Ret_Annlzd_3_Yr], fundata.Tot_Ret_Annlzd_5_Yr-index11.Tot_Ret_Annlzd_5_Yr AS [Difference of Tot_Ret_Annlzd_5_Yr], (fundata.Std_Dev_3_Yr-index11.Std_Dev_3_Yr)/index11.Std_Dev_3_Yr AS Std_Dev_3_Yr, (fundata.Std_Dev_5_Yr-index11.Std_Dev_5_Yr)/index11.Std_Dev_5_Yr AS Std_Dev_5_Yr, (Nz(fundata.Std_Dev_10_Yr,0)-Nz(index11.Std_Dev_10_Yr,0))/Nz(index11.Std_Dev_10_Yr,0) AS Std_Dev_10_Yr, fundata.Date11, index11.Date11
FROM (fundata INNER JOIN fundix ON fundata.Fund_Name = fundix.[Fund Name]) INNER JOIN index11 ON fundix.Fundix = index11.Product
WHERE (((fundata.Date11)=[index11].[date11]));
                                              
1:
2:
3:

Select allOpen in new window

 

by: GrahamSkanPosted on 2009-10-03 at 13:18:41ID: 25486858

So it's a Select query. That is the simplest, so shouldn't be a problem.

I am inexperienced in VB.net, and I joined this question because it wasn't in the .Net zone.

I do wish the EE would add some clarity to the zone categories.

 

by: LPurvisPosted on 2009-10-04 at 05:15:24ID: 25488967

You've included function calls in your query which aren't part of Jet's own VBA library.
(Only certain functions can be called from outside Access - where the expression service resolves them locally in Access which is running a different VBA dll than that which Jet instantiates alone).

The function I'm refering to is Nz.
In fact, this never stood a chance, because it's not a VBA function at all - it's a member of the Access Application object model.
You can substitute NZ calls with immediate if functions instead. Or just perform the calculations "late" (i.e. after querying) in the programming environment of your choice, in this case VB 2008.

Cheers.

20120131-EE-VQP-002

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