_copyUpdateStmt(const UpdateStmt *from)
{
	UpdateStmt *newnode = makeNode(UpdateStmt);

	COPY_NODE_FIELD(relation);
	COPY_NODE_FIELD(targetList);
	COPY_NODE_FIELD(whereClause);
	COPY_NODE_FIELD(fromClause);
	COPY_NODE_FIELD(returningList);
	COPY_NODE_FIELD(withClause);

	return newnode;
}
_copyUpdateStmt(const UpdateStmt *from)
{
	UpdateStmt *newnode = makeNode(UpdateStmt);

	COPY_NODE_FIELD(relation);
	COPY_NODE_FIELD(targetList);
	COPY_NODE_FIELD(whereClause);
	COPY_NODE_FIELD(fromClause);
	COPY_NODE_FIELD(returningList);
	COPY_NODE_FIELD(withClause);

	return newnode;
}