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Resolved! update column name in partitioned table

I have a partitioned table t with columns date, class, nan. I want to update the column "nan" to "name".I am trying this: `date`class`name xcol t This is not working. Please help me out here guys:)

KB by New Contributor
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Resolved! Running user defined aggregation on partitioned tables

Hello I want to run a user defined aggregating function getPercentile (to get say 99% or 50% or 1% percentile of a list of value) on a partitioned table. From this link map-reduce , only few types of aggregation can KDB decompose into map step and re...

lzl by New Contributor II
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