Solved

Use string as SSRS table name

Posted on 2012-12-28
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Last Modified: 2013-01-02
I have a data source that is a folder filled with daily txt files.  Everyday I want to be able to automatically read yesterday's file.  In Report Services if I use the following code I am able to see the contents of a file.  
SELECT        *
FROM            12272012.txt

In SSMS if I use this code...
SELECT replace(convert(varchar, DATEADD(d, -1,getdate()), 101), '/', '') + '.txt' as ErrLog

It produces the file name I need (Ex: 12272012.txt) but it doesn't work in the FROM statement of SSRS.   Please help me with how I need to change this to make it work in SSRS?
SELECT *
FROM replace(convert(varchar, DATEADD(d, -1,getdate()), 101), '/', '') + '.txt'
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Comment
Question by:BobRosas
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6 Comments
 
LVL 8

Assisted Solution

by:venk_r
venk_r earned 150 total points
ID: 38729183
try using a stored procedure instead

 CREATE PROCEDURE myDynamic

AS

DECLARE @SQL NVARCHAR(4000)
DECLARE @table NVARCHAR(100)
SET @table =replace(convert(varchar, DATEADD(d, -1,getdate()), 101), '/', '') + '.txt'

SET @SQL='SELECT * FROM '+@Table

EXEC(@SQL)
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Author Comment

by:BobRosas
ID: 38733423
Thank you for your help but if I do that I'm not sure how to access the sp.  Currently the data I need to access is a text file so my DataSource is an ODBC connection.  I don't know how to use my ODBC Data source connection and then connect to the sp.  Should I be doing this an entirely different way?
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LVL 27

Expert Comment

by:planocz
ID: 38734594
One thing you may want to look at; is made your txt files into XML (layout) file.
since SSRS are just readable XML files.
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Author Comment

by:BobRosas
ID: 38737875
Thank you for your input!  Is there a place I can go to read more about how to do this?  Or can you provide me with more details?  I would still need to be able to automatically update the txt file to an xml file and I don't know how to do that.
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LVL 27

Accepted Solution

by:
planocz earned 150 total points
ID: 38737940
you  will need to most likely do it in VB or C# coding. Their is a standard import file from the framework that has all the info to make and read a XML file. It  would be too much detail work to post here. you may want to get a code book or look online to "How to create and read XML files".
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Author Comment

by:BobRosas
ID: 38738465
I've increased points so I can award to both since I'm not sure how I will proceed.  Thank you for your help!
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