ACC2000: Function to Reverse String Characters in a Query

ID: Q210439

The information in this article applies to:

Moderate: Requires basic macro, coding, and interoperability skills.

This article applies only to a Microsoft Access database (.mdb).


SUMMARY

Microsoft Access 2000 includes a new function, StrReverse(), that returns a string with the characters reversed from the original argument string. For example, if you were to pass the string "ABCD" to the function, the function would return the string "DCBA."

This article shows you how to create a function called ReverseString() that uses the StrReverse() function, so that you can sort records in a query with the results of the function.


MORE INFORMATION

NOTE: You will receive the following error message if you use the StrReverse() function directly in a query.

Undefined function 'StrReverse' in expression.
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The following example demonstrates how to create and use the ReverseString() function:
  1. Open the sample database Northwind.mdb.


  2. Create a module and type the following line in the Declarations section, if it isn't already there:


    3. 
Option Explicit
  3. Type the following procedure:


    4. 
Function ReverseString (MyString As String)
   ReverseString = StrReverse(MyString)
End Function
  4. Create the following new query based on the Categories table:


    5. 
   Query: Query1
   -------------------------------------------
   Field: CategoryName
      Show: (selected)
   Field: Expr1: ReverseString([CategoryName])
      Sort: Ascending
      Show: (not selected)
  5. On the Query menu, click Run. Note that the following items are returned:


    6. 
   CategoryName
   ------------
   Seafood
   Produce
   Beverages
   Grains/Cereals
   Confections
   Dairy Products
   Condiments
   Meat/Poultry
The returned records are sorted in ascending order on the CategoryName field, but the field is sorted from right to left, rather than from left to right. For example, Seafood is sorted on "d," Produce on "e," Beverages on "s," and so on.

Additional query words: inf sorting backwards sample function 


Keywords          : kbprg kbdta AccCon KbVBA 
Version           : WINDOWS:2000
Platform          : WINDOWS 
Issue type        : kbhowto

Last Reviewed: July 6, 1999