expr.setValueSize(column.getSize());
expr.setValueType(VoltType.get((byte)column.getType()));
// add column to the materialize node.
PlanColumn colInfo = m_context.getPlanColumn(expr, column.getTypeName());
materializeNode.appendOutputColumn(colInfo);
}
// connect the insert and the materialize nodes together
insertNode.addAndLinkChild(materializeNode);
AbstractPlanNode rootNode = insertNode;