Description:
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In the user's guide page for pg_fetch_all, the "Return Values" section 
could be improved by stating something like:

For example, 

       pg_fetch_all(pg_query($dbh,"SELECT id, name FROM demotable"));

might return an array like:

       array(array(id => 1, name => 'one'),
             array(id => 2, name => 'two'));


Reproduce code:
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From manual page: function.pg-fetch-all
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