dataframeIn R

dataframe - In R, how can I collapse the data of grouped rows into one row? - Stack Overflow
I have the following sample dataframe:df <- data.frame(record_id = c(1, 1, 1, 2, 2, 3, 3, 3),instan
dataframeIn Rhow can I collapse the data of grouped rows into one rowStack Overflow
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