ADO Delete Records
我們可以使用 SQL DELETE 命令刪除資料庫表中記錄。
刪除表中的記錄
我們要刪除 Northwind 資料庫 Customers 表中的一條記錄。我們首先建立一個列出 Customers 表中所有記錄的表。
<html>
<body>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
set rs=Server.CreateObject("ADODB.Recordset")
rs.open "SELECT * FROM customers",conn
%>
<h2>列表資料庫</h2>
<table border="1" width="100%">
<tr>
<%
for each x in rs.Fields
response.write("<th>" & ucase(x.name) & "</th>")
next
%>
</tr>
<% do until rs.EOF %>
<tr>
<form method="post" action="demo_delete.asp">
<%
for each x in rs.Fields
if x.name="customerID" then%>
<td>
<input type="submit" name="customerID" value="<%=x.value%>">
</td>
<%else%>
<td><%Response.Write(x.value)%></td>
<%end if
next
%>
</form>
<%rs.MoveNext%>
</tr>
<%
迴圈
conn.close
%>
</table>
</body>
</html>
如果使用者點選“customerID”列中的按鈕，他/她將被帶到一個名為“demo_delete.asp”的新檔案。 “demo_delete.asp”檔案包含有關如何根據資料庫表中的一條記錄的欄位建立輸入欄位的原始碼。它還包含一個“Delete record”按鈕，該按鈕將刪除當前記錄。
<html>
<body>
<h2>刪除記錄</h2>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
cid=Request.Form("customerID")
if Request.form("companyname")="" then
set rs=Server.CreateObject("ADODB.Recordset")
rs.open "SELECT * FROM customers WHERE customerID='" & cid & "'",conn
%>
<form method="post" action="demo_delete.asp">
<table>
<%for each x in rs.Fields%>
<tr>
<td><%=x.name%></td>
<td><input name="<%=x.name%>" value="<%=x.value%>"></td>
<%next%>
</tr>
</table>
<br><br>
<input type="submit" value="Delete record">
</form>
<%
else
sql="DELETE FROM customers"
sql=sql & " WHERE customerID='" & cid & "'"
on error resume next
conn.Execute sql
if err<>0 then
response.write("No update permissions!")
else
response.write("Record " & cid & " was deleted!")
end if
end if
conn.close
%>
</body>
</html>
