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Get tables with only the ODBC connection

Posted on 2000-04-17
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I want to be able to use SQL to get all of the tables in my ODBC connection.  How can I do this?
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Question by:nathans
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by:KMAN
ID: 2723704
Please elaborate on what "Get all of the tables" means.  Link them?  Import them? List them?
What kind of Database is ODBC connection to?
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paasky earned 200 total points
ID: 2723706
Hello nathans,

Here's my suggestion:

SELECT Name
FROM MSysObjects
WHERE Type=4
AND Left([Connect],3)="DSN";

Regards,
Paasky
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by:paasky
ID: 2723710
that will list the names of all linked ODBC tables... or do you have something else in your mind?
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by:berg1375
ID: 2723752
Good info. Thanks paasky
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by:paasky
ID: 2723767
Here's a little sample code which I just made that shows all the remote ODBC database tables (in debug window):

Public Function ShowODBCTables()
    Dim tdf As TableDef
    Dim db As DAO.Database
   
    Set db = OpenDatabase("test", dbDriverPrompt, True, "ODBC;DATABASE=;UID=scott;PWD=tiger;DSN=sample")
    For Each tdf In db.TableDefs
        Debug.Print tdf.Name
    Next
   
    Set db = Nothing
   
End Function

You can test it with debug window typing
? ShowODBCTables

Remember to change the connect string matching your system (above was tested with Oracle8)

Paasky
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by:paasky
ID: 2723773
berg1375, you're welcome. :-)
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Author Comment

by:nathans
ID: 2723783
Adjusted points from 100 to 200
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Author Comment

by:nathans
ID: 2723784
Only one problem it says I have no read access???

this is my database on my machine.  the odbc is on my machine.

I want to access all of the user tables that is in a odbc connection to create crud screens on the fly.  

It sounds like your right now how do I get read access??
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by:paasky
ID: 2723815
nathans, check in your Tools | Options.. that System Objects are checked visible. You should have read access to that system table if you're logged in as an Admin (by default if you've not defined any security settings)
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by:paasky
ID: 2723827
I modified my second code a little that it will show linked ODBC tables:

Public Function ShowODBCTables()
    Dim tdf As TableDef
    Dim db As DAO.Database
   
    Set db = CurrentDb
    For Each tdf In db.TableDefs
        If left(tdf.Connect, 4) = "ODBC" Then
            Debug.Print tdf.Name
        End If
    Next
   
    Set db = Nothing
   
End Function

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by:paasky
ID: 2723844
Here's little improved version that also creates a worktable, stores table names there and finally shows data for you:

Public Function ShowODBCTables()
    Dim tdf As TableDef
    Dim db As DAO.Database
   
    On Error Resume Next
   
    Set db = CurrentDb
    db.Execute ("DROP TABLE ODBC_TABLES")
    db.Execute ("CREATE TABLE ODBC_TABLES (TABLE_NAME TEXT(30));")
    For Each tdf In db.TableDefs
        If left(tdf.Connect, 4) = "ODBC" Then
            db.Execute ("INSERT INTO ODBC_TABLES VALUES (" & Chr(34) & tdf.Name & Chr(34) & ");")
        End If
    Next
    DoCmd.OpenTable "ODBC_TABLES"
    Set db = Nothing
   
End Function
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Expert Comment

by:paasky
ID: 2723850
Maybe TEXT(30) is not enough with some databases than Oracle, TEXT(64) might be better size...
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Author Comment

by:nathans
ID: 2723874
I guess I left out to much from my question if you help me get this to work I will double my 200 points to 400 points..


I am working from with in ColdFusion

<cfset datasource="test">
<cfset Table="Employee">


<cfquery name="GetData" datasource="#datasource#">
SELECT Name
FROM MSysObjects
WHERE Type=4;
</cfquery>


It says I do not have read rights... How can I get read rights... I want to be able to create crud screens on the web dynamically...

I already can in Oralce and MS Sql there must be someway I can do it in MS Access.

Thanks again.
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Author Comment

by:nathans
ID: 2723951
Open up the database in Access, go to Tools, Options, View and select Hidden
and System objects.  


Keep in mind that most of the data is stored as OLEObjects, which means that you won't get much information out of the table, even with read permissions.

After that you have to go to Tools, Security and then set the permissions and then the odbc has access to it.!!!

This is awesome

Thanks,
Nathan - Mr. ColdFusion

I now can do this with Oracle, MS SQL, and MS Access.

PS. Since I figured out the last part I will not double it.
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Expert Comment

by:paasky
ID: 2723977
nathans, glad I could assist you.

Best regards,
paasky
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