Command

🌿 Command structure

csvdiff3 {lhs_file_name} {rhs_file_name} {options}

Argument	Description
lhs_file_name	Absolute/Relative path to left-hand side file.
rhs_file_name	Absolute/Relative path to right-hand side file.
options	Optional arguments.

🌿 Frequently used options

Option		Description	Default
short	long	e.g.
-h	--help	Show help message and exit.
		e.g. csvdiff3 -h
	--version	Show program’s version number and exit.
		e.g. csvdiff3 --version
-k	--matching-keys	Matching key indices for Input CSV in CSV format. (like index1,index2,…​) Matching key index is 0 based. For non-fixed length numbers, specify the number of digits after :. (like index1:maxLength1,index2,…​)	0
		e.g. csvdiff3 left.csv right.csv -k 1 csvdiff3 left.csv right.csv -k 0,1 csvdiff3 left.csv right.csv -k 0:8,3 csvdiff3 left.csv right.csv -k 0:8,3:5
-u	--unique-key	Specify if the matching key is unique. Then, if it detects that the matching key is not unique, an error will occur.	False
		e.g. csvdiff3 left.csv right.csv -u
-i	--ignore-columns	Specify the index of the column to be ignored in CSV format. Column index is 0 based.	[]
		e.g. csvdiff3 left.csv right.csv -i 4 csvdiff3 left.csv right.csv -i 4,6
-d	--show-difference-only	Report the lines with the difference. Can be used with option -c. Cannot be used with option -a.	False
		e.g. csvdiff3 left.csv right.csv -d
-a	--show-all-lines	Report on all lines. Can be used with option -c. Cannot be used with option -d.	False
		e.g. csvdiff3 left.csv right.csv -a
-c	--show-count	Report the number of differences. Treat this as True if neither -d nor -a is specified.	False
		e.g. csvdiff3 left.csv right.csv -c (↑ This is equivalent to no options ↓) csvdiff3 left.csv right.csv
-v	--vertical-style	Report in vertical style. If not specified, report in horizontal(two facing) style.	False
		e.g. csvdiff3 left.csv right.csv -v
-H	--header	If specified, this specification will be enforced. n No header y With Header	None
		e.g. csvdiff3 left.csv right.csv -H n csvdiff3 left.csv right.csv -H y
-x	--show-context-from-arguments	Report the context generated from the arguments and CSV sniffing.	False
		e.g. csvdiff3 left.csv right.csv -x