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 '*************************************************
'函數(shù)名：getMaxOrder
'作 用：得到最大序列號(hào)
'參 數(shù)：fieldName ----在序列號(hào)表中的字段名
' tableName ----序列號(hào)所在表名
' fieldName ----在表中的字段名
'返回值：字段的最大值
'調(diào)用函數(shù)：idAdd：作用見(jiàn)上
'*************************************************
function getMaxOrder(fieldName,tableName,tableFileName)
dim orderNO,orderRS,testRS
set testRS=Server.CreateObject("ADODB.recordset")
set orderRS=Server.CreateObject("ADODB.recordset")
firstNO=year(date)&right(("0"&month(date)),2)
orderSQL="select * from fieldMaxValue where fieldName='"&fieldName&"'"
orderRS.open orderSQL,conn,3,2
if not orderRS.eof then
orderRS("fieldMaxValue")=orderRS("fieldMaxValue")
orderNO=orderRS("fieldMaxValue")
if left(orderNO,6)=firstNO then
orderNO=idAdd(orderNO)
else
orderNO=firstNO&"00001"
end if
else
orderRS.addnew
orderRS("fieldName")=fieldName
orderNO=firstNO&"00001"
end if
testRS.open "select max("&tableFileName&") from "&tableName&" where "&tableFileName&" like '"&firstNO&"%'",conn,1,2
if (not testRS.eof) and testRS(0).value>orderNO then
orderNO=idAdd(testRS(0).value)
end if
testRS.close
set testRS=nothing
orderRS("fieldMaxValue")=orderNO
orderRS.update
orderRS.close
set orderRS=nothing
getMaxOrder=orderNO
end function

'*************************************************
'函數(shù)名：idAdd
'作 用：用來(lái)增加一：比如idAdd("5")="6",idAdd("L99")="M00"，idAdd("!")="!1"
' 如果是數(shù)字就到9后進(jìn)位,如果是小寫(xiě)字母到期z后進(jìn)位
' 如果是大寫(xiě)字母到Z后進(jìn)位，其它在后面加一個(gè)1
'參 數(shù)：id ----需來(lái)增加的數(shù)
'返回值：增加后的數(shù)
'調(diào)用函數(shù)：addOne 一個(gè)數(shù)增加一 AddOne("5")="6",Add(9)="0",AddOne("a")="b",
' AddOne("z")="a",AddOne("A")="B",AddOne("Z")="A"
'*************************************************
Function AddOne(first)
Dim tempfirst
AddOne = first
intfirst = Asc(first)
If (intfirst >= 48 And intfirst < 57) Or (intfirst >= 65 And intfirst < 90) Or (intfirst >= 97 And intfirst < 122) Then
AddOne = Chr(intfirst + 1)
Exit Function
End If
If (intfirst = 57) Then
AddOne = "0"
Exit Function
End If
If (intfirst = 90) Then
AddOne = "A"
Exit Function
End If
If (intfirst = 122) Then
AddOne = "a"
Exit Function
End If
End Function

Function idAdd(id)
Dim fornt, back, strFind, strBackFind, idLen, tempid
if id="" or isNull(id) then
iddAdd=1
exit Function
end if
tempid = id
idLen = Len(id)
For i = 1 To idLen
fornt = Left(id, idLen - i)
back = Right(id, i - 1)
strFind = Mid(id, idLen + 1 - i, 1)
strBackFind = AddOne(strFind)
id = fornt & strBackFind & back
If strFind < strBackFind Then
Exit For
End If
If strFind > strBackFind Then
If i = idLen Then
id = id & "1"
Else
If Mid(id, idLen - i, 1) = AddOne(Mid(id, idLen - i, 1)) Then
id = fornt & strBackFind & back & "1"
Exit For
End If
End If
End If
Next
If id = tempid Then
id = id & "1"
End If
idAdd = id
End Function

'調(diào)用示例
serviceNO=getMaxOrder("serviceNO","service","serviceNO")

'其中保存所有字段流水號(hào)最大值的表的結(jié)構(gòu)為:
表名:fieldMaxValue
字段
id fieldName fieldMaxValue

該文章在 2011/3/3 16:41:14 編輯過(guò)