Fetch query which triggered a rule

["Jonatan Evald Buus" <jonatan.buus@xxxxxxxxxxxxxxxxxxx>]

Greetings,
Is it possible to fetch the query which triggered a rule?

I.e. suppose I create the following rule:
CREATE RULE MyRule AS ON Select TO MyTable_Tbl DO INSTEAD process_query($sql);

Where $sql represents the query which triggered the rule.

Appreciate the input

Cheers
Jona