Ref: https://rud.is/b/2022/12/19/2022-hanukkah-of-data-puzzle-1/ library(tidyverse) cust orders orders |__ filter( 2017 == lubridate::year(ordered), grepl(“cleaner|bagel”, desc, ignore.case=TRUE) ) |__ group_by(customerid, orderid) |__ summarise( ord = paste0(desc, collapse=“; “), n = n() ) |__ arrange(desc(n)) # look for bagel… Continue reading →

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