Hi all,suppose,q)t:(92510111i,102510111i)I want to convert t into time
types.but it is wrong,convert "92510111" into time types.How do i get
09:25:10.111 10:25:10.111?Can you help me?Thanks,Sky
Hi All,Suppose:Header message:records types byte------------------1000
11 368My question:How I should be in accordance with the specific byte
aligned (8 bytes or others), convert KDB + data into binary?Have a good
week!Thanks,Sky
Hi,suppose,q)t:("ihhj*";4 2 2 8 9)1:(`:/f.bin;8;25)q)19423113680 "\000\
000\000\000\ 000\000\000\ 000\000"q)tb:flip `c1`c2`c3`c4`c5!tHow to
convert type of string into a date type in table tb?Best Regards,Sky
Hi, suppose: q)dir1:`:/test; q)key dir1 `20141201`20141202`.... q)dir2:`
sv dir,(key dir1) 0 q)key dir2 `IBM.txt`AMD.txt`.... I should how to
iterate through all the text files and generate partition hdb? Best
regards, Sky.
Hi All, Sometimes exchange trading hours ahead of a small, leading to
more some of the bars.for example:q)tradesym time price sizeIBM 09:24:57
20.30 100IBM 09:30:00 20.31 150 q)t:select last price,sum size by sym,1
xbar time.minute from tradeq)tsym t...
Hi Fiying,Thanks.It seems that only to do so.Sky在 2015年4月23日星期四
UTC+8上午9:58:17,Flying写道:While you can try to shoehorn q to write some
binary output of the format you want, it's far from perfect -- q does
not have built-in support for non-q binary out...
Hi Jeremy,This method can't set up 8 byte alignment.If according to this
method, the header file, structure and byte alignment is
what?Thanks,Sky在 2015年4月22日星期三 UTC+8上午5:24:58,Jeremy Lucid写道:t:([]
records:1000;types 11; byte:368)save `:tThis will sav...
在 2015年4月15日星期三 UTC+8下午9:58:52,Sean O'Hagan写道: Hi, I provided that link
because it has the ability to load a list of files from an inputted
directory. You just need to modify it to accept multiple dirs.Yes the
link says "Loading From Large Files" , b...
Hi Sean,Thanks.Maybe you misunderstood my meaning.I'm not reading large
file.I want to read many files in different folders.Best Regards,Sky在
2015年4月13日星期一 UTC+8下午5:04:24,Sean O'Hagan写道:Here is a very good twiki on
loading from a list of csvs and cre...
Hi Jonny, I'm sorry, I didn't express my meaning well.But, through your
reply, I can think calculation bar should pass the xbar, in go to deal
with data.I have an idea:q)tsym time price sizeIBM 09:25 20.30 100IBM
09:30 20.31 150IBM 09:32 20.33 100IBM...