DERBY-6006: NullPointerException in INSERT INTO ... SELECT FROM ... ORDER BY backporting change #1417991 by kahatlen from 10.10 to 10.9 branch. A NormalizeResultSet should not expose generated ORDER BY columns to its parent.
db/derby/code/branches/10.9/
db/derby/code/branches/10.9/java/engine/org/apache/derby/impl/sql/compile/NormalizeResultSetNode.java