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ORA-FO-248-C: need to clarify the behavior of union, intersect and except

From: Stephen Buxton <Stephen.Buxton@oracle.com>
Date: 17 Feb 04 10:46:23
Message-Id: <200402171846.i1HIkN204437@rgmgw6.us.oracle.com>
To: public-qt-comments@w3.org

SECTION 15.2.2: op:union

"Summary: Constructs a sequence containing every node that occurs in the values of either $parameter1 or $parameter2, eliminating duplicate nodes. Nodes are returned in document order. "
If $parameter1 is empty sequence and $parameter2 has duplicate nodes and is not in document order, should we just return $parameter2 as it is, or normalize $parameter2 first, i.e. eliminating duplicate nodes and sorting in document order?

op:intersect and op:except need clarification too.

- Steve B.
Received on Tuesday, 17 February 2004 13:46:37 UTC

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