Natively Connect to Teradata Data in PHP

Drop the CData ODBC Driver for Teradata into your LAMP or WAMP stack to build Teradata-connected Web applications. This article shows how to use PHP's ODBC built-in functions to connect to Teradata data, execute queries, and output the results.

Configure a DSN

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

To connect to Teradata, provide authentication information and specify the database server name.

• User: Set this to the username of a Teradata user.
• Password: Set this to the password of the Teradata user.
• DataSource: Specify the Teradata server name, DBC Name, or TDPID.
• Port: Specify the port the server is running on.
• Database: Specify the database name. If not specified, the default database is used.

Establish a Connection

Open the connection to Teradata by calling the or methods. To close connections, use or .

$conn = odbc_connect("CData ODBC Teradata Source","user","password");

Connections opened with are closed when the script ends. Connections opened with the method are still open after the script ends. This enables other scripts to share that connection when they connect with the same credentials. By sharing connections among your scripts, you can save system resources, and queries execute faster.

$conn = odbc_pconnect("CData ODBC Teradata Source","user","password");
...
odbc_close($conn); //persistent connection must be closed explicitly

Create Prepared Statements

Create prepared statements and parameterized queries with the function.

$query = odbc_prepare($conn, "SELECT * FROM NorthwindProducts WHERE CategoryId = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC Teradata Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM NorthwindProducts WHERE CategoryId = ?");
$success = odbc_execute($query, array('5'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC Teradata Source","user","password");
$query = odbc_exec($conn, "SELECT ProductId, ProductName FROM NorthwindProducts WHERE CategoryId = 5");
 

Process Results

Access a row in the result set as an array with the function.

$conn = odbc_connect("CData ODBC Teradata data Source","user","password");
$query = odbc_exec($conn, "SELECT ProductId, ProductName FROM NorthwindProducts WHERE CategoryId = 5");
while($row = odbc_fetch_array($query)){
 echo $row["ProductId"] . "\n";
}

Display the result set in an HTML table with the function.

$conn = odbc_connect("CData ODBC Teradata data Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM NorthwindProducts WHERE CategoryId = ?");
$success = odbc_execute($query, array('5'));
if($success)
 odbc_result_all($query);

More Example Queries

You will find complete information on the driver's supported SQL in the help documentation. The code examples above are Teradata-specific adaptations of the PHP community documentation for all ODBC functions.