Even shorter

SELECT Max(DataInsertion)
FROM Titre

But, I think all these will be optimized and got the same. Look at the query plan for each.

>What are the differences between these 2 queries:
>

SELECT *
>FROM Titre
>WHERE DateInsertion = (
>	SELECT MAX(DateInsertion)
>	FROM Titre)

>
>AND
>
>

SELECT *
>FROM Titre
>WHERE DateInsertion = (
>	SELECT TOP 1 DateInsertion
>	FROM Titre
>	ORDER BY DateInsertion DESC)

>
>I found that the second syntax can be a lot faster.
>
>Can I safely replace my SELECT MAX with SELECT TOP?