access代码_ASP代码实现access随机显示不重复记录

]

<%
"-------------------------数据库连接-----------------------
Set objConn = Server.CreateObject("ADODB.Connection")
objConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" &_
"Data Source=" & Server.MapPath("data.mdb")
objConn.Open
"-------------------------数据库连接-----------------------
"-------------------------检索数据-----------------------
strSQL = "SELECT id,DataColumn FROM DataTable"
"Sql语句，检索数据库
Set objRS = Server.CreateObject("ADODB.Recordset")
"创建记录集
objRS.Open strSQL, objConn, 1, 1
"执行检索
Count=objRS.RecordCount
"得到记录总数
Item=4
"显示记录数
"-------------------------检索数据-----------------------
"-------------------------------------------------------------------------------
redim a(Item, 2),t(Count)
"定义2数组，数组a用来储存记录，数组t用来删选记录
"---------------------------------------
"初始数组数值，目的为了插入数据以后和此值做比较
for each j in t
j=0
next
"---------------------------------------
"---------------------------------------
" 随机抽取记录号
Randomize timer "初始化随机数生成器
for j=1 to Item
k=int(rnd*Count+1) "从总数里面随机取一条记录
do while t(k)<>0 "判断是否记录是否已经在数组中
k=int(rnd*Item+1)
loop
t(k)=1 "第k条记录被选中
next
"--------------------------------------
j=1:i=1"定义下标
"--------------------------------------
" 循环选取数据集objRS中的部分记录存放到数组中
Do While Not objRS.Eof
if t(j)=1 then
a(i,1)=objRS("id") "记录id
a(i,2)=objRS("DataColumn") "记录内容
i=i+1
end if
j=j+1
objRS.MoveNext
Loop
"--------------------------------------
"-------------------------------------------------------------------------------
"----------------------------显示内容--------------------
for i=1 to Item
Response.write "序号"&a(i,1)&"<br>"
Response.write "内容"&a(i,2)&"<p>"
next
"----------------------------显示内容--------------------
"---------------------------
"释放资源
objRs.Close
set objRs=nothing
objConn.Close
set objConn=nothing
"---------------------------
%>