有人可以解释一下这个asp代码是如何工作的



我想从数据库中的表中回显一些数据,并找到了以下代码:

set rs = Server.CreateObject("ADODB.recordset")
rs.Open "Select name From users", conn
do until rs.EOF
    for each x in rs.Fields
        Response.Write(x.value)
    next
    rs.MoveNext
loop
rs.close

我测试了它并且它有效,但我不知道所有这些语法的含义,并且代码没有提供任何解释。有经验的人可以帮助我吗?

rs 是一个记录集,表示数据库查询的结果。

做直到...循环循环(在 moveNext 的帮助下)遍历记录集中找到的所有行(即表用户)。

在所有行上找到每个...next 循环遍历在单行中找到的所有字段,在本例中仅为列名。

请参阅添加到以下代码中的注释

' Create a recordset. This is an object that can hold the results of a query.
set rs = Server.CreateObject("ADODB.recordset")
' Open the recordset for the query specified, using the connection "conn"
rs.Open "Select name From users", conn
' Loop over the results of the query until End Of File (EOF)
'   i.e. move one at a time through the records until there are no more left
do until rs.EOF
    ' For each field in this record
    for each x in rs.Fields
        ' Write out its value to screen
        Response.Write(x.value)
    ' Move to the next field
    next
    ' Move to the next record
    rs.MoveNext
' Continue to loop until EOF
loop
' Close the recordset
rs.close

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