Advance DBMS Lecture5

8/7/2019 Advance DBMS Lecture5

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Function IsNothing(v As Variant) As IntegerIsNothing = True

Select Case VarType(v)

Case vbEmpty

Exit Function

Case vbNull

Exit Function

Case vbBooleanIf varToTest Then IsNothing = False

Case vbByte, vbInteger, vbLong, vbSingle, vbDouble, vbCurrency

If v <> 0 Then IsNothing = False

Case vbDate

IsNothing = False

Case vbString

If (Len(v) <> 0 And v <> " ") Then IsNothing = FalseEnd Select

End Function


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Advance DBMS Lecture5

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Transcript of Advance DBMS Lecture5