Checking if a record exists already before using SQL INSERT ?

[JumboCactuar]

Hi,
not sure if this fits into the excel category but its what im using with ADODB

Sub insertSQL()

Application.ScreenUpdating = False


    var1 = Sheets("Sheet2").Range("A1")
    
   Set cnn = CreateObject("ADODB.Connection")
    cnn.Open MyConn


    Rw = 2
    
    For i = 2 To Rw
    val1 = Cells(i, 1).Value
    val2 = Cells(i, 2).Value
    val3 = Cells(i, 3).Value
    val4 = Cells(i, 4).Value
    val5 = Cells(i, 5).Value
    val6 = Cells(i, 6).Value
    
    MYSQL = "INSERT INTO umtykbfw_test.`TABLE 1` (Country,IDNO,Yr_2000,Yr_2015,Yr_2025,Yr_2050) VALUES ('" & val1 & "','" & val2 & "','" & val3 & "','" & val4 & "','" & val5 & "','" & val6 & "');"
    cnn.Execute MYSQL
    Next i
    
    cnn.Close
    Set cnn = Nothing




Application.ScreenUpdating = True




End Sub

With the above, if the table already contains the IDNO, i instead want to UPDATE the existing record

I know i can probably do an SQL select on the IDNO then if anything is returned then update, just wondering if theres a better way