ADO Queries
We may use SQL to create queries to specify
only a selected set of records and fields to view.
Examples
Display records
where "Companyname" starts with an A
How to display only the records from the "Customers" table that have a "Companyname"
that starts with an A.
Display records
where "Companyname" is > E
How to display only the records from the "Customers" table that have a "Companyname"
that is larger than E.
Display only Spanish
customers
How to display only the Spanish customers from the "Customers" table.
Let the user choose
filter
Let the user choose which country to show customers from.
Display Selected Data
We want to display only the records from the "Customers" table that have a "Companyname"
that starts with an A (remember to save the file with an .asp extension):
<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")
sql="SELECT Companyname, Contactname FROM Customers
WHERE CompanyName LIKE 'A%'"
rs.Open sql, conn
%>
<table border="1" width="100%">
<tr>
<%for each x in rs.Fields
response.write("<th>" & x.name & "</th>")
next%>
</tr>
<%do until rs.EOF%>
<tr>
<%for each x in rs.Fields%>
<td><%Response.Write(x.value)%></td>
<%next
rs.MoveNext%>
</tr>
<%loop
rs.close
conn.close%>
</table>
</body>
</html>
|
Here is the result:
| Companyname |
Contactname |
| Alfreds Futterkiste |
Maria Anders |
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