After doing a simple AR query
$cat=IngredientCategorie::model()->findByPk(40);
and looking at the actual query with WebLogRoute, I see that the resulting SQL query is :
SELECT * FROM ingredient_categorieen t WHERE t.ingredient_categorie_id=‘40’ LIMIT 1
All of this makes sense to me, except the ‘t’ part, as this is nowhere in my Database…
(there is no prefix, there is no table with name ‘t’, 
)
Why does Yii add this ?
I cannot find any material about this in the Yii-guide / cookbook or forum
Does this mean a performance penalty ?