如何对KDB中的每一行应用max函数? [英] How to apply max function for each row in KDB?

问题描述

我想确保列x中的所有值均不小于0.5，所以我这样做:

I want to ensure all values in column x are no smaller than 0.5, so I do:

update x:max (x 0.5) from myTable

但这会导致错误(在 Studio for KDB + 中)

But this gives an error (in Studio For KDB+):

An error occurred during execution of the query.
The server sent the response:
type
Studio Hint: Possibly this error refers to wrong type, e.g `a+1

怎么了?

推荐答案

您可以尝试使用|

q)update x|0.5 from myTable

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