Concatenate column values and perform grouping & aggregation

In the table below, the 1st column is person’s name, and the multiple columns after it are items they purchased. There are people who sometimes buy multiple same items in one purchase and who place multiple orders at different times.


A

B

C

D

1

John

Apple

Apple

Orange

2

Paul

Grape



3

John

Pear



4

Steve

Lychee

Grape


5

Jessica

Apple



We need to rearrange the table into a crosstab, where the column headers are items and the row headers are people’s names, as shown below:


E

F

G

H

I

J

1

Name

Apple

Orange

Pear

Grape

Lychee

2

Jessica

1





3

John

2

1

1



4

Paul




1


5

Steve




1

1

Use SPL XLL to do this:

=spl("=?.groupc@r(~1;~.m(2:);1).pivot@s(~1:Name; ~2,count(~2))",A1:D5)

Picture3png

groupc@r groups members of a sequence by a specified number and transposes columns to rows; ~1 represents the 1st child member of the current member, and ~.m(2:) gets child members of the current member from the 2nd to the last. pivot@s transposes rows to columns and performs aggregation on each group of data.

Source:https://www.reddit.com/r/excel/comments/1ctnd42/trying_to_find_the_total_number_of_times_a_word/