#41 — Group And Summarize Rows While Retaining Columns Whose Values Are Unchanged
Problem description & analysis:
In the Excel table below, the ID column is the category; Value1 and Value2 contain numbers; both Descr 1 and Descr 2 remain unchanged under the same ID value.
| A | B | C | D | E | |
| 1 | ID | Value 1 | Value 2 | Descr 1 | Descr 2 |
| 2 | 11 | 2.5 | 1.8 | a | x1 |
| 3 | 11 | 2.3 | 1.1 | a | x1 |
| 4 | 11 | 1.9 | 1.6 | a | x1 |
| 5 | 12 | 3.7 | 3.5 | b | x2 |
| 6 | 12 | 3.9 | 1.5 | b | x2 |
| 7 | 13 | 2.5 | 0.2 | c | x3 |
| 8 | 13 | 2.6 | 4.1 | c | x3 |
| 9 | 13 | 2 | 4.8 | c | x3 |
| 10 | 13 | 2.7 | 1.8 | c | x3 |
This is an older version of Excel (which does not support groupby function). Task: Group rows by ID and sum the Value1 field and Value2 field while retaining the Descr 1 field and Descr 2 field.
| G | H | I | J | K | |
| 1 | ID | Value 1 | Value 2 | Descr 1 | Descr 2 |
| 2 | 11 | 6.7 | 4.5 | a | x1 |
| 3 | 12 | 7.6 | 5 | b | x2 |
| 4 | 13 | 9.8 | 10.9 | c | x3 |
Solution:
Use SPL XLL to get this done:
=spl("=E(?).groups(ID;sum('Value 1'):'Value 1',sum('Value 2'):'Value 2','Descr 1','Descr 2')",A1:E10)
As shown in the picture below:
Explanation:
E()function converts a data arrangement to a table. groups() function groups and summarizes the table, during which a newly generated column can be renamed through the semicolon.
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References to other rich Excel operation cases: Desktop and Excel Data Processing Cases
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