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Q260405: HOWTO: Import Table Structures and Data from Microsoft Access

Article: Q260405
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0,3.0b,5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbAccess kbDatabase kbvfp300 kbvfp300b kbvfp500 kbvfp500a kbvfp600 KbDBFDBC kbGrpDSFox
Last Modified: 26-MAY-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0 
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SUMMARY
=======

This article illustrates how to programmatically create table structures that
correspond to tables in Microsoft Access Master Data Base (MDB) files. This
article also illustrates how to copy the data in Microsoft Access tables to
Visual FoxPro tables.

MORE INFORMATION
================

In situations where developers want to copy data from Microsoft Access tables to
Visual FoxPro tables, the SQLTABLES, AFIELDS, and SQLEXEC functions may be used
to:

- Retrieve information regarding the number of tables contained in the MDB
  file.

- Retrieve the names of tables in the MDB file.

- Retrieve the structure of each of the tables contained in the MDB file.

- Create tables that correspond to the structures of the identified tables.

- Copy data from Microsoft Access tables to Visual FoxPro tables.

The following code snippet illustrates the process of copying data from Microsoft
Access tables and information from the MDB file into Visual FoxPro tables. The
code sample browses the Table_name field of the SQLResult cursor.

  LOCAL lcMyFile, lnConnHandle, lnResult, lcSQLCommand, lnGetData, lcNewName
  LOCAL ARRAY laWhatErr(1)

  lcMyFile = GETFILE('MDB')

  *!* No point if no MDB file is selected
  IF !EMPTY(lcMyFile)
     *!* Use a SQLStringConnect to connect to the MDB file
     lnConnHandle = ;
        SQLSTRINGCONNECT('DRIVER=MICROSOFT ACCESS DRIVER (*.MDB);DBQ=' + ;
           lcMyFile)
        
     IF lnConnHandle > 0
        *!* Need to know what tables are contained in the MDB file
        lnResult = SQLTABLES(lnConnHandle, 'TABLE')
        
        IF lnResult > 0
           *!* Create a new DBC named "MYNEW"
           CREATE DATABASE mynew
           *!* Select SQLResult and scan through the cursor.
           SELECT SQLResult
           SCAN
              *!* Build a SQL SELECT statement to pass to SQLEXEC()
              lcSQLCommand = ;
                 "SELECT * FROM [" + ALLTRIM(SQLResult.table_name) + "]"
                 
              lnGetData = SQLEXEC(lnConnHandle, lcSQLCommand, 'newdata')
              IF lnGetData > 0
                 *!* SQLEXEC() was successful
                 lcNewName = STRTRAN(ALLTRIM(SQLResult.table_name), " ", "_")

                 SELECT newdata
                 *!* Copy Table Structure and Data to a DBF file
                 *!* VFP 3.0 - loses long field names
                 *!* COPY TO (lcNewName)
                 *!* ADD TABLE (lcNewName)
  		   *!* VFP 5.0/6.0 - keeps long field names
                 COPY TO (lcNewName) DATABASE myNew
              ENDIF
           ENDSCAN
        ENDIF
        *!* Done Getting Data, so Disconnect
        =SQLDISCONNECT(lnConnHandle)
     ELSE
        *!* The SQLStringConnect failed
        =MESSAGEBOX('ODBC Connection Failed', MB_ICONEXCLAMATION, 'ODBC')
        *!* Call AERROR()
        =AERROR(laWhatErr)
        *!* Display the error
        DISPLAY MEMORY LIKE laWhatErr
     ENDIF
  ENDIF

  BROWSE FIELDS table_name

(c) Microsoft Corporation 2000, All Rights Reserved. Contributions by John Desch,
Microsoft Corporation.


Additional query words:

======================================================================
Keywords          : kbAccess kbDatabase kbvfp300 kbvfp300b kbvfp500 kbvfp500a kbvfp600 KbDBFDBC kbGrpDSFox kbDSupport kbCodeSnippet 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600 kbVFP500a
Version           : WINDOWS:3.0,3.0b,5.0,5.0a,6.0
Issue type        : kbhowto

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