_copyFetchStmt(const FetchStmt *from)
{
	FetchStmt  *newnode = makeNode(FetchStmt);

	COPY_SCALAR_FIELD(direction);
	COPY_SCALAR_FIELD(howMany);
	COPY_STRING_FIELD(portalname);
	COPY_SCALAR_FIELD(ismove);

	return newnode;
}
_copyFetchStmt(const FetchStmt *from)
{
	FetchStmt  *newnode = makeNode(FetchStmt);

	COPY_SCALAR_FIELD(direction);
	COPY_SCALAR_FIELD(howMany);
	COPY_STRING_FIELD(portalname);
	COPY_SCALAR_FIELD(ismove);

	return newnode;
}