Prev

ADO DataTypes

ADO supports a variety of data types that are used to represent and manipulate data retrieved from databases. Understanding these data types is crucial for effective data handling.

Key Topics

Common DataTypes

Example

<%
    Dim field
    Set field = Server.CreateObject("ADODB.Field")
    Response.Write("Field Type for Text: " & 200 & " (adVarChar)<br>")
    Response.Write("Field Type for Integer: " & 3 & " (adInteger)<br>")
%>

Explanation: This example demonstrates referencing common ADO data types like adVarChar for text and adInteger for integers.

Mapping DataTypes

Example

<%
    Dim conn, rs
    Set conn = Server.CreateObject("ADODB.Connection")
    conn.Open "Provider=SQLOLEDB;Data Source=localhost;Initial Catalog=MyDatabase;User ID=myUser;Password=myPassword;"

    Set rs = conn.Execute("SELECT * FROM Employees")
    Response.Write("Field Name: " & rs.Fields(0).Name & "<br>")
    Response.Write("Field Type: " & rs.Fields(0).Type & "<br>")

    rs.Close
    conn.Close
    Set rs = Nothing
    Set conn = Nothing
%>

Explanation: This example demonstrates mapping database field types to their corresponding ADO data types.

Key Takeaways

  • ADO supports a range of data types for handling different kinds of data.
  • Common data types include adVarChar (text) and adInteger (integer).
  • Understanding data type mapping is essential for seamless database interactions.
Prev