functional select

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1

It’s quite difficult for me to grasp the goofy syntax of functional select.. I wish there were more documents. :( 

Supposed I have a table that looks like this, and I want to multiple ra, rb, rc by rr. How do I do it? There are only 3 columns in this example but I might have more, so I don’t want to spell out all the names like update ra: ra*rr, rb: rb * rr … 

q))show meta tab

c | t f a

-----------| -----

minute | t s

ra | f

rb | f

rc | f

rr | f

2

http://code.kx.com/wiki/JB:QforMortals2/queries_q_sql#Functional_select

you can use parse to help figure out the functional form

0N!parse"select …";