Method parseLegacyPartitionBy

src/jrd/RecordSourceNodes.cpp:2269–2288

Parse PARTITION BY subclauses of window functions.

// Parse PARTITION BY subclauses of window functions.
void WindowSourceNode::parseLegacyPartitionBy(thread_db* tdbb, CompilerScratch* csb)
{
	SET_TDBB(tdbb);

	SSHORT context;
	Window& window = windows.add();
	window.stream = PAR_context(csb, &context);

	const UCHAR count = csb->csb_blr_reader.getByte();

	if (count != 0)
	{
		window.group = PAR_sort_internal(tdbb, csb, false, count);
		window.regroup = PAR_sort_internal(tdbb, csb, false, count);
	}

	window.order = PAR_sort(tdbb, csb, blr_sort, true);
	window.map = parseMap(tdbb, csb, window.stream, true);
	window.frameExtent = WindowClause::FrameExtent::createDefault(*tdbb->getDefaultPool());
}

// Parse frame subclauses of window functions.
void WindowSourceNode::parseWindow(thread_db* tdbb, CompilerScratch* csb)