Results for kdb
I have a table modeled after the question here: KDB/Q How to transpose a table? but my table has an extra 2 keys. What is the general solution to tran...
In kdb, an ema function is already provided which works fine for regular time series. However for irregular time series, does anyone have an ema funct...
I'm looking for a kdb like left join (left inner join) in pandas(seems like pandas merge and join method provide left outer join support) Toy example ...
I have two tables: info First Last Score Full Name Ann R 10 Ann R Bob C 12 Bob C Ann R 13 Ann R Fil B 19 Fil B summary Full Name...
I have a table like this: nameTable Name Included Ann 1 Bob 0 Cat 1 I have a function that gets the "bits" from the Included? column: ...
How to find the rank of a kdb function through program for test validation. For example -> func: {x+y*10} / rank 2 For func funcation the rank is 2 h...
I have a table that looks like this: ID Name 1_Day_Time 2_Day_Time 2B May 762 8D Air 142 W2 Tim 908 332 9H Bee 5E Ice 712 How...
I am new to kdb/Q. I've used Python in the past, and am trying to find out how I can traverse a kdb table using the equivalent of a for loop. I have a...
I'm trying to build my own unit testing framework in Q, and what I'm trying to do is something like this: // Is the expected value (EQUAL_TO/GREATER_T...
I have a table that has incremental data for a symbol, and what I want to do is aggregate the data and create a summary table, where it only shows the...
I am trying to use the fby function to create a new column that cumulatively sums a Volume column by a Symbol. I have a table named x that looks like ...
I need to write a function in q/kdb which takes a variable v and returns 1b if v is defined and 0b if it is not: $ a:2 $ doesExist`a 1b $ doesExist`b...
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How to find all files containing specific text (string) on Linux?
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