Grouping data of two columns containing the same data
36216
Messaging System with PHP/MySQL
149949
How to create multiple rows combining data sets
33487
R aggregate data in one column based on 2 other columns
29248
How to merge columns in a table?
68371
How to split csv whose columns may contain ,
69565
Finding contiguous ranges in grouped data
8801
Can I combine the results from multiple columns into a single column without UNION?
95667
Combine rows / concatenate rows
102396
Combine values from related rows into a single concatenated string value
36003
Summarizing multiple columns with data.table
117343
Average of multiple columns
53718
SQL query construction - separate data in a column into two columns
105665
SQL - assorting data
103928
Concat the second column value if the first column value is same
46441
Combine column from multiple rows into single row
116221
Remove columns with same value from a dataframe
77924
Average rows with same first column