VB RecordSetÎÊÌâ
StrSQL="SELECT Max(SaleTicketNo) as salesticketno from tabSaleList WHERE saledate=2010-4-14"
Set SaleRS = SaleMDB.OpenRecordset(StrSQL, dbReadOnly)
Èç¹û²éѯ³öÀ´Ã»ÓÐÖµ ÔÚµ÷ÊÔµÄʱºò¿´¼ûSaleRS("salesticketno")µÄ½á¹ûÊÇNull ÎÒ¼ÓÉÏÅжÏÌõ¼þ
If Not SaleRS.EOF Then
If SaleRS("salesticketno") = Null Then
TicketedNo = "000001"
Else
TicketedNo = SaleRS("salesticketno")
End If
End If
Ϊʲô If SaleRS("salesticketno") = Null Õâ¸öÌõ¼þÊDz»³ÉÁ¢µÄ°¡? ÄÇÓ¦¸ÃÔõôÅжϰ¡?
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