Empact/activerecord-import — pull request #1 by pgericson (2012-07-16 12:25:42+00:00)
Title: if :timestamp => true AND :on_duplicate_key_update is present it will get an "column count doesn't match" error

if :timestamp => true and using the :on_duplicate_key_update option it will produce the error below
```console
Mysql2::Error: Column count doesn't match value count at row 1: INSERT INTO (OTHERCOLUMNS,

`created_at`,`updated_at`,`updated_at`)

VALUES .....(VALUESHERE) ON DUPLICATE KEY UPDATE OTHERDUPLICATESTUFFHERE,

`table_name`.`created_at`=VALUES(`created_at`),`table_name`.`updated_at`=VALUES(`updated_at`),`table_name`.`updated_at`=VALUES(`updated_at`)
```
This pull request fixes this