How Can I Efficiently Bulk Export Excel Data to MS Access Using SQL INSERT Statements?

Bulk Exporting Excel Data to MS Access Using SQL INSERT

While loops provide an effective method for exporting data from Excel to MS Access, they can become inefficient when dealing with large datasets. To enhance performance, consider utilizing a single SQL INSERT statement for bulk insertions.

Existing Code with Looping:

The provided VBA code loops through each row of an Excel worksheet and inserts data into an MS Access table:

For i = 1 To rcount - 1
    rs.AddNew
    rs.Fields("fdName") = Cells(i + 1, 1).Value
    rs.Fields("fdDate") = Cells(i + 1, 2).Value
    rs.Update

Next i

Limitations of Looping:

This approach can be time-consuming when handling extensive datasets, leading to sluggish performance.

SQL INSERT for Bulk Insertions:

An alternative solution involves using a single SQL INSERT statement to insert multiple rows simultaneously. This method eliminates the need for looping, significantly accelerating the export process.

INSERT INTO fdFolio ([fdName], [fdOne], [fdTwo])
SELECT * FROM [Excel 8.0;HDR=YES;DATABASE=" & dbWb & "]." & dsh

In this code:

• The INSERT INTO statement creates and inserts into the "fdFolio" table in the Access database.
• The SELECT * query retrieves data from the Excel worksheet within the specified range.

Additional Considerations:

• Use field names instead of "*" for optimal performance.

• For specific field names, use this syntax:

  INSERT INTO fdFolio (fdName, fdOne, fdTwo)
  SELECT fdName, fdOne, fdTwo FROM [Excel 8.0;HDR=YES;DATABASE=" & dbWb & "]." & dsh

• If the target table has more fields than the data source, use NULL for missing values.
• Test the above code with a smaller dataset before applying it to a larger one.

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