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No change in size ,  15:21, 8 December 2010
It is not possible to mix different types of expressions in a query result. The outermost expression of a query must either be a collection of updating or non-updating expressions. Generally there is no way to perform any updating queries and return a result at the same time as you cannot access your own changes during a single query. Regarding database nodes, dividing a single query into an updating and a non-updating query solves this issue.
Trying to modify and return a DOM node within the same snapshot is another story. As changes on DOM nodes are non-persistantpersistent, you cannot access them in a subsequent query. This is where the transform expression comes into play.
===Function Declaration===
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