Question : Query question - difference in single table

I have a table named tblRunCounterChanges.  In the table are records that have three fields named Ack_Date, Resch_Date, and Ord_qty.  The field data in each of these three field may change bacause the table is written to with an append table query.  Each of these records has a 4th field named OpenOrdRecID.  I need a write a new query against tblRunCounterChanges and show ONLY records that have changed in Ack_Date, OR Resch_Date, OR Ord_qty using OpenOrdRecID as the unique record identifier.  

In other words, for example, if any of the Ack_Date, OR Resch_Date, OR Ord_qty field dta has changed I need to see only those records in the new query.  If nothing in these 3 fields has changed then I don't want it to appear in the query results.

Can this be done?

Answer : Query question - difference in single table

<< Each line of code had "tbltbl" and only should have had "tbl" in each case.>>

Sorry about that....that's what I get for cutting and pasting....

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 I don't understand why that is...unless you are allowing nulls in some of those fields.  Can you place the table or a (small subset of it) in a DB by iteself and upload?  If you don't want to make it public, you can send it to me directly (e-mail is in my profile).

JimD.