Parallel queries

<p><font size="2">All, </font><p><font size="2">How hard would it be to get a back end to hand off parts of a query
treeto other back ends (which it created), and then collate the results, and take it from there?  Obviously, it would
onlydo this under certain conditions, specifically, if it was compiled in to the server, and the query tree in question
hada particular profile, i.e.: lent itself to parallel processing.  But surely it couldn't be that difficult to get a
backend to hand off, say, a sub-select sub-tree, or UNION sub-trees.  Under heavy loads with the right hardware, this
couldgain significant performance improvement.</font><br /><p><font size="2">Michael Ansley</font><code><font
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