Extension:ContributionTracking/contribution tracking table

id
Primary key.

Schema summary
mysql> describe contribution_tracking; +-+-+--+-+-++ +-+-+--+-+-++ +-+-+--+-+-++ (see source here).
 * Field          | Type                | Null | Key | Default | Extra          |
 * id             | int(10) unsigned    | NO   | PRI | NULL    | auto_increment |
 * contribution_id | int(10) unsigned   | YES  | UNI | NULL    |                |
 * form_amount    | varchar(20)         | YES  |     | NULL    |                |
 * usd_amount     | decimal(20,2)       | YES  |     | NULL    |                |
 * note           | text                | YES  |     | NULL    |                |
 * referrer       | varchar(4096)       | YES  |     | NULL    |                |
 * anonymous      | tinyint(1) unsigned | YES  |     | NULL    |                |
 * utm_source     | varchar(128)        | YES  |     | NULL    |                |
 * utm_medium     | varchar(128)        | YES  |     | NULL    |                |
 * utm_campaign   | varchar(128)        | YES  |     | NULL    |                |
 * utm_key        | varchar(128)        | YES  |     | NULL    |                |
 * payments_form  | varchar(50)         | YES  |     | NULL    |                |
 * optout         | tinyint(1) unsigned | YES  |     | NULL    |                |
 * language       | varchar(8)          | YES  |     | NULL    |                |
 * country        | varchar(2)          | YES  |     | NULL    |                |
 * ts             | char(14)            | YES  | MUL | NULL    |                |
 * owa_session    | varbinary(255)      | YES  |     | NULL    |                |
 * owa_ref        | int(11)             | YES  |     | NULL    |                |