How to merge/join two file based on common field with repeated rows
106330
Merge files based on matching of first column
151233
Why are duplicates not being merged?
46441
Combine column from multiple rows into single row
94888
match first column of file a with paragraphs of file b
78854
Merging columns from two separate files
79298
Recalculate a Field with data from another field, ignoring NULL values
47605
Merging very large csv files with common column
137070
If column matches another file, print every line with match (awk/grep)
74705
Merge two excel files using a common column
48516
How to count occurrences of one field grouped by values of another?
33180
How can I merge files on a line by line basis?
87537
Replace string in one file with contents of another file when match column
16313
How to process a multi column text file to get another multi column text file?
117063
Find records present in file 1 also in both file 2 and file 3
89775
split file lines based on first field
15825
How to join (merge) data frames (inner, outer, left, right)
86633
Merge records depending on common columns and specify the values which are uncommon in the last column as comma separated