I have a function that filters on a master table as the below:

I have the following bit of code inside a functional select argument:

Consider a table containing a column a which is a list of lists as

I built a table selector that can produce many tables from a master table by filtering on a specific column that I desire with the required values. The formula is as below:

I have a situation where I want users to connect using TLS, but I want my kdb procs to also permit plain connection so a -E 1 is specified on the proc.

I’m trying to use the grammar of graphics plotting library in KX developer 1.5.4 to plot a 1 min chart for IBM. However, as you can see I get disjointed candles, which seem to have each collapsed into their respective days. How can i plot continuous intraday bars?

Given ohlcv data such as

I am attempting to join a single-columned table to another table with several columns. The only column in the first table matches the title and type of the first column of the second table, but it has more values as the second table filters on a bigger master table and this single column takes all distinct values from the master for the specific column.

In KDB, for each ticker I’d like to get all the rows where signal=1 except the first occurrence in each ticker.

In KDB, I want to count the number of distinct elements in a set of columns.