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48 bytes added ,  14:26, 8 December 2010
;Returning Results
: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. Spoken clearly, you cannot Generally there is no way to perform any updating queries and return a result at the same time. But a simple and convenient workaround exists.
common error: copy/fragment of dbnode-> change for result. better use transform
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