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<a href=http://www.jsp001.com/list_thread.php?int_attribute=1>FAQ汇萃</a>
>> <a href=http://www.jsp001.com/list_thread.php?forumid=45&int_attribute=1>SQL之家</a>
>> 如何在ASP中使用mySQL [<a href=http://www.jsp001.com/forum/showthread.php?goto=newpost&threadid=448>查看别人的评论</a>]<br>
<hr><p>由 amtd 发布于: 2001-02-15 09:36</p><p> </p><p><br><br>Using A mySQL Databases<br>by Ben O'Neill <br><br><br>Databases are the best way to keep your web site up-to-date and dynamic. Databases are used these days by <br>thousands of web sites. They are used for storing news and general information. Web sites like the ASP <br>Index (www.aspin.com) are run on large databases. Databases make a web site easy to update and once you <br>have the base script, to add, remove and modify things in a database is very easy. <br><br> <br><br>To start you need to know how to connect to a database. ASP can connect to virtually any type, from <br>Microsoft Access to SQL. In this example I'll be using mySQL and OLE DB to connect to it. <br><br> <br><br>mySQL can be downloaded from the mySQL web site (www.mysql.com). You will also need the provider used to <br>connect to it, also available from the mySQL web site. <br><br> <br><br>You may be asking what's OLE DB? I'm used to ODBC and DSN. OLE DB is faster and more stable. It's almost <br>exactly the same. <br><br> <br><br>First we need to connect to the database, because it's a mySQL database you also need to supply a database <br>name. (in mySQL you can have mulitple databases on the same SQL server.) <br><br> <br><br><% <br><br>strConnection = "driver={MySQL};server=localhost;uid=benoneill;pwd=mypassword;database=databasename" <br><br> <br><br>Set adoDataConn = Server.CreateObject("ADODB.Connection") <br><br>adoDataConn.Open strConnection <br><br>%> <br><br> <br><br>And now we've connected. Let's pretend we've got a big list of lots and lots of email addresses, here's <br>the contents of our database, it allows me to show you how it works better. <br><br> <br><br>Table Name: emailadds <br><br> <br><br>name牋牋牋牋牋牋牋?牋牋牋牋牋?emailadd <br><br>------------------------------------------------------ <br><br>Ben牋牋牋牋牋牋牋牋?牋牋牋牋牋?sheepcow@planetunreal.com <br><br>Fred牋牋牋牋牋牋牋牋 牋牋牋牋牋?freddy@thebigisp.com <br><br>Ben Harding牋牋 牋牋牋牋牋?benharding@hisisp.com <br><br>Dave Geralding 牋牋牋牋牋?daveg@mymail.com <br><br> <br><br>Now we have the database open let's run a query to list and output all the names and email address in a <br>nice easy to view table. <br><br> <br><br><% <br><br>?strQuery = "SELECT * FROM emailadds" <br><br> <br><br>?Set rsEmailData = adoDataConn.Execute(strQuery) <br><br> <br><br>?If Not rsEmailData.BOF Then <br><br>%> <br><br> <br><br><TABLE> <br><br> <br><br>?/span><TR><br><br>牋 <TD<b>Name</b></TD><br><br>牋 <TD><b>Email Address</b></TD><br><br>?/span></TR> <br><br> <br><br><% <br><br>?Do While Not rsEmailData.EOF <br><br>%> <br><br> <br><br>?/span><TR><br><br>牋 <TD><%=rsEmailData("name").Value %></TD><br><br>牋 <TD><%=rsEmailData("emailadd").Value %></TD><br><br>?/span></TR> <br><br> <br><br><% <br><br>牋?rsEmailData.MoveNext <br><br>?Loop <br><br> <br><br>%> <br><br> <br><br></TABLE> <br><br> <br><br><% <br><br>?Else <br><br> <br><br>牋? Response.Write("Sorry, no email addresses found.") <br><br> <br><br>?End If <br><br>%> <br><br> <br><br> <br><br>There we go. If no records are found then it says "Sorry, no email addresses found". <br><br> <br><br>That query is simple enough, it tells the database to get (SELECT) all the records and all the fields from <br>the table named emailadds. <br><br> <br><br>How about we make it only show people with the name "ben" somewhere in their name, simple change the query <br>to this: <br><br> <br><br>SELECT * FROM emailadds WHERE name LIKE '%ben%' <br> <br><br>That query would return only 2 records, Ben and Ben Harding. <br><br> <br><br>It's important you use single quotes ('), because double quotes won't work. You can also be very selective <br>and do: <br><br> <br><br>SELECT * FROM emailadds WHERE name='Ben' <br> <br><br>That query would only return Ben, not Fred or Ben Harding, or Dave Geralding. <br><br> <br><br>After using databases you should always clear up. Close the database and the record set, and set them to <br>nothing so that the memory used by them is regained, do this by writing this: <br><br> <br><br><% <br><br>?rsEmailData.Close <br><br>?adoDataConn.Close <br><br> <br><br>?Set adoDataConn = Nothing <br><br>?Set rsEmailData = Nothing <br><br>%><br><br><br> <br><br>__________________<br><font color=red>真实源于生活！ </font><br>请访问我们的网站： <br>（VB爱好者乐园） <br><a href="http://www.vbgood.com" target=_blank>http://www.vbgood.com</a><br><a href="http://www.d1vb.com" target=_blank>http://www.d1vb.com</a><br><a href="http://61.128.97.225/vbgood/index.asp" target=_blank>http://61.128.97.225/vbgood/index.asp</a><br>拥有1800多个资料！ </p></td>
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