Examine a table for a true condition

UPDATE YourTable
SET whatever = 'something'
WHERE TF_Field = True

Define for us the frequency at which you need this run (just once, every time a row is added to the table, every day at midnight, ...)

I'm currently running this code when an update button on the form is pressed, however I am updating a 35,000 record table whether tbl_EOS_Rank.Select is true or not.  

I'd like to examine the records to see if anything requires updating before firing off two queries.

Private Sub Cmd_Update_excl_Click()
Dim stSQL As String
Dim response As String


    response = MsgBox("Exclude selected items from further review?", vbOKCancel)
        If response = vbCancel Then
        Exit Sub
        End If
        
DoCmd.SetWarnings False
Me.Dirty = False

stSQL = "INSERT INTO tbl_Excl_Item_Numbers ( ITEM_SEQUENC_NO )" & _
        "SELECT tbl_EOS_Rank.ITEM_SEQUENC_NO " & _
        "FROM tbl_EOS_Rank " & _
        "WHERE (((tbl_EOS_Rank.Select)=True))"
    
 DoCmd.RunSQL stSQL
 
  stSQL = "UPDATE tbl_eos_rank " & _
         "SET Excl = True " & _
         "WHERE (((tbl_EOS_Rank.select) =TRUE))"
         
DoCmd.RunSQL stSQL

 DoCmd.SetWarnings True
 FilterClear
 ChkOff
  
 Me.Requery
 
End Sub

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This works well, however I did have to change the code slightly.  Not sure why.  Trial and error on my part.

It appears this counts all the ID records if any [select] fields are true. Is this faster then just reporting back that a [select]=true does exist?

If Nz(DCount("ID", "tbl_EOS_Rank", [Select] = True), 0) Then

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I note that you did NOT enclose the "Select=True" portion in double quotes. Probably just a typo, but be sure to do that ...

Strange however it works with and without quotes.  Thanks again!