_ From a question on topicbox: _
Sorting data on disk as per code.kx.com, even when compressed
q).z.zd:17 2 6 q)tab:flip {dttmsymapbp!(x?.z.d+til 10;x?08:00+01:00*til 8;x?4?4;x?5.0;x?5.0)}10000 q):db/tab/ set .Q.en[:db]tab :db/tab/ q)meta get :db/tab/ c | t f a —| ----- dt | d tm | u sym| s ap | f bp | f q)tm xasc :db/tab/ :db/tab/ q)meta get :db/tab/ c | t f a —| ----- dt | d tm | u s sym| s ap | f bp | f q)-21!`:db/tab/dt compressedLength | 6611 uncompressedLength| 40016 algorithm | 2i logicalBlockSize | 17i zipLevel | 6i