VB 数据库操作实例:写入软件版本号(版本控制代码实现)

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//      public_IP_STRING = Trim(Text_0.Text)
//       public_SQLOLEDB_STRING = "Provider=SQLOLEDB.1;Password=" & public_PASSWORD & _
//                                        ";Persist Security Info=True;User ID=" & public_USERNAME & _
//                                        ";Initial Catalog=****;Data Source= " & _
//                                        public_IP_STRING & ",1433"
Public Function F_insert_Ver(string1 As Variant, ip_string As Variant) As String
        On Error Resume Next
        F_insert_Ver = ""
    If string1 <> "" And ip_string <> "" Then
        Dim select_string, insert_string, st, mm
        select_string = "select ver_sig  from ut_sud_ver where ver_number = ‘" & string1 & "‘"
        Dim db As Connection
        Set db = New Connection
        db.CursorLocation = adUseClient
        db.Open public_SQLOLEDB_STRING
        Set rs = New Recordset
        rs.Open select_string, db, adOpenStatic, adLockOptimistic
        mm = Val(rs.RecordCount)
        If mm <> "" Then
            If mm > 0 Then
                update_string = "update ut_sud_ver set ver_sig=‘0‘ where ver_sig=‘1‘"
                db.Execute update_string
                update_string = "update ut_sud_ver set ver_sig=‘1‘ where ver_number=‘" & string1 & "‘"
                db.Execute update_string
                F_insert_Ver = "2"
            Else
                update_string = "update ut_sud_ver set ver_sig=‘0‘ where ver_sig=‘1‘"
                db.Execute update_string
                insert_string = "insert  ut_sud_ver(ver_number,ver_sig)  select  ‘" & string1 & "‘,‘1‘"
                db.Execute insert_string
                st = my_sql.F_get_field(public_SQLOLEDB_STRING, "ut_sud_ver", "ver_number", "ver_number", string1)
                If st <> "" Then
                    F_insert_Ver = "1"
                Else
                    F_insert_Ver = "0"
                End If
            End If
        End If
        rs.Close
    End If
End Function

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