query: Aggregate function that append columns values of each group?
positive_passages.docid: 21426
positive_passages.text: How to use GROUP BY to concatenate strings in SQL Server?
negative_passages.docid: 45455
negative_passages.text: sum pair of columns based on matching fields
negative_passages.docid: 139237
negative_passages.text: How to sum over duplicates?
negative_passages.docid: 8801
negative_passages.text: Can I combine the results from multiple columns into a single column without UNION?
negative_passages.docid: 96679
negative_passages.text: Group By Multiple Columns
negative_passages.docid: 31119
negative_passages.text: Count number of rows per group and add result to original data frame
negative_passages.docid: 12400
negative_passages.text: Dynamic pivot: sum of sales per month
negative_passages.docid: 15955
negative_passages.text: Aggregate String Concatenation in Oracle 10g
negative_passages.docid: 67634
negative_passages.text: Grouping by total length of elements grouped
negative_passages.docid: 22982
negative_passages.text: Most efficient way to call same Table-Valued Function on multiple columns in a Query
negative_passages.docid: 7274
negative_passages.text: Calculate group mean (or other summary stats) and assign to original data
negative_passages.docid: 133760
negative_passages.text: How do I create a sum for each group of data in Libre Office Calc?
negative_passages.docid: 55747
negative_passages.text: Grouping functions (tapply, by, aggregate) and the *apply family
negative_passages.docid: 81132
negative_passages.text: MySQL pivot row into dynamic number of columns
negative_passages.docid: 102396
negative_passages.text: Combine values from related rows into a single concatenated string value
negative_passages.docid: 29638
negative_passages.text: Count number of occurences for each unique value
negative_passages.docid: 137984
negative_passages.text: How do I use "GROUP BY"?