kdb+ and q
Q+A on all things kdb+ database and the q language
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corrupt .d file

Situation:Lets say in a partitioned hdb, the .d file for some of the dates is corrupt i.e (missing cols and/or the cols are not in the same order) ?Question:how does q catch it ?

kdb+/q taxi ride benchmark

this is pretty cool! https://kx.com/2017/01/25/kx-1-1-billion-taxi-ride-benchmark-highlights-advantages-kdb-architecture/

mkrmkr by New Contributor II
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RE: [personal kdb+] Writing Csv File with .Q.fs[]

Content-ID: <0E9788FD42943740806B7450796A8F26@aquaq.co.uk>Content-Transfer-Encoding: base64PGh0bWwgeG1sbnM6bz0idXJuOnNjaGVtYXMtbWljcm9zb2Z0LWNvbTpvZmZpY2U6b2ZmaWNlIiB4bWxuczp3PSJ1cm46c2NoZW1hcy1taWNyb3NvZnQtY29tOm9mZmljZTp3b3JkIiB4bWxuczptPSJodHRwOi8...

Writing Csv File with .Q.fs[]

Hi all, I'm new to Kdb and have been having trouble writing big tables to .Csv files under the W32 version due to WSFULLand I am trying to work around it with .Q.fs[] chunking.The following code fails with wsfull on Kdb32:/------------------------Dev...

innauto1 by New Contributor
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running reval in K mode in .z.ph

I am trying to use reval in K mode for http request. q).z.phk){x:uh$[@x;x;*x];$[~#x;hy[`htm]fram[$.z.f;x]("?";"?",*x:$."\\v");x~,"?";hp@{hb["?",x]x}'$."\\v";"?["~2#x;hpjx["J"$2_x]R "?"=*x;@[{hp jx[0j]R::1_x};x;he];"?"inx;@[{hy[t]@`/:tx[t:`$-3#n#x]@.(...