kdb+ and q
Q+A on all things kdb+ database and the q language
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File Compression

Hi,I would like to use lz4 as file compression instead of gzip as it is much faster [1].Is there any way to use it with KDB+ (with -19! and .z.zd)? Unfortunately I cannot use filesystem compression (zfs would support lz4).I tried gzip and kdb-ipc com...

sieber_m by New Contributor
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Please Explain asc Operator Sort Order!

q)asc (0; 0 0; 0 0 0; (0 0; 0 0); ((0 0; 0 0);(0 0; 0 0)); enlist0; (enlist 0;enlist 0);enlist 0 0;enlist (0 0;0 0); (();());enlist ())0 / (),rank 0() / 0,rank 1,() / 1 x0, rank 1 **(();()) / 2 x0, rank 2 **,(0 0;0 0) / 1 x2 x 2, rank 3((0 0;0 0);(0 ...