如何判断表中是否存在相同的重复一条记录?

时　间:2007-10-29 09:01:40
作　者:   ID：16  城市：江阴
摘　要:判断表中是否存在相同的重复一条记录?
正　文:

程序算出5个数, A,B,C,D,E
表一有五个字段. 如果表一中有一条记录是A,B,C,D,E, 则不插入记录, 否则将这五个数字插入到表一中.
Private Sub Command10_Click()
Dim a As Integer
Dim b As Integer
Dim c As Integer
Dim d As Integer
Dim e As Integer
a = Round(Rnd(1) * 10, 0)
b = Round(Rnd(2) * 10, 0)
c = Round(Rnd(3) * 10, 0)
d = Round(Rnd(4) * 10, 0)
e = Round(Rnd(5) * 10, 0)
Me.Text0 = a
Me.Text2 = b
Me.Text4 = c
Me.Text6 = d
Me.Text8 = e
Dim rec As DAO.Recordset
Set rec = CurrentDb.OpenRecordset("ffff", dbOpenDynaset)
rec.MoveFirst
Do Until rec.EOF
If rec("fa") = a And rec("fb") = b And rec("fc") = c And rec("fd") = d And rec("fe") = e Then
MsgBox "已存在相同紀錄!請重新算!", vbOKOnly
Exit Do
Else
rec.MoveNext
If rec.EOF = True Then
rec.AddNew
rec("fa") = a
rec("fb") = b
rec("fc") = c
rec("fd") = d
rec("fe") = e
rec.Update
End If
End If
Loop
End Sub

ffff就是你的表一
fa\fb\fc\fd\fe就是五个字段
me.text0\2\4\6\8是窗体上的五个文本框，存放临时算出的五个随机数

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