Append/Update queries that violate Required or AllowZeroLength or PrimaryKey rules do not trigger error messages when executed from VBA. Is there a way to correct this?

This presents a major threat.  Suppose you archive data from TableXYZ to TableABC and then purge from TableXYZ the records you assume have been transferred.  BIG MISTAKE. TableABC will be missing the violating records, and those records will have been deleted from TableXYZ, forever.

For example:

INSERT INTO TableABC ( aPrimaryKeyFieldWithNullsAndEmptyStringsForbidden)
SELECT AFieldContainingNullsOrEmptyStrings

will trigger an error message when run from the QBE screen if TableXYX contains nulls or empty strings, or if it attempts to insert a value that violates TableABC's primary key. However, the following VBA code will let you believe everything is OK when, in fact, not all records from TableXYZ were appended:

Sub test()
   Dim sql As String
   Dim rs As DAO.Recordset
   sql = ""
   sql = sql & "INSERT INTO TableABC ( aPrimaryKeyFieldWithNullsAndEmptyStringsForbidden ) "
   sql = sql & "SELECT AFieldContainingNullsOrEmptyStrings "
   sql = sql & "FROM TableXYZ"
   CurrentDb.Execute sql
End Sub

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what about trying following:

 DoCmd.SetWarnings true

    CurrentDb.Execute sql, dbFailOnError
Rey Obrero (Capricorn1)Commented:
if you want to use the .execute method, you need to use the option dbfailonerror

currentdb.execute sql,dbfailonerror

you can also check for records affected

see this link for more info

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musgahAuthor Commented:
Thanks a lot.  All answers were very helpful.
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