用存儲過程、GetRows()、抽取10萬條數據的速度測試
2024-05-04 11:01:48
供稿：網友
現有10W條數據，Access數據庫保存
通過正常提?。?nbsp;
復制代碼 代碼如下:
<%
Set conn= Server.CreateObject("ADODB.Connection")
c&Server.MapPath("db2.mdb")
conn.Open connstr
Set rs = Server.CreateObject ("ADODB.Recordset")
sql = "Select * from people order by id desc"
rs.Open sql,conn,1,1
Do While Not rs.EOF
Response.write rs("id")&" | "
rs.MoveNext
Loop
%>
http://www.cnbruce.com/test/getrows/show1.asp
耗時3,250.000毫秒，總測試平均值在3秒左右
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使用存儲過程提?。?nbsp;
復制代碼 代碼如下:
<%
Set conn = Server.CreateObject("ADODB.Connection")
Set cmd = Server.CreateObject("ADODB.Command")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("db2.mdb")
cmd.ActiveConnection = conn
cmd.CommandText = "Select * from people order by id desc"
Set rs = cmd.Execute
Do While Not rs.EOF
Response.write rs("id")&" | "
rs.MoveNext
Loop
%>
http://www.cnbruce.com/test/getrows/show2.asp
耗時2,187.500毫秒，總測試平均值在2秒左右
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以上兩種均不能徹底解決執行時間漫長的問題，主要原因即是循環每次都須向數據庫抽取記錄（Command速度相對較快）
那么使用GetRows()方法呢：
復制代碼 代碼如下:
<%
Set conn = Server.CreateObject("ADODB.Connection")
Set cmd = Server.CreateObject("ADODB.Command")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("db2.mdb")
cmd.ActiveConnection = conn
cmd.CommandText = "Select * from people order by id desc"
Set rs = cmd.Execute
rsArray = rs.GetRows()
For i = 0 To UBound(rsArray, 2)
Response.Write rsArray(0, i)&" | "
Next
%>
http://www.cnbruce.com/test/getrows/show3.asp
耗時187.500毫秒，總測試平均值在0.2秒左右
GetRows()方法是將數據從 Recordset 復制到二維數組中，這是一個二維數組，第一個下標標識字段，第二個則標識記錄號
所以rsArray = rs.GetRows()
