Comments (5)
@puddleoasis why not submit a PR?
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This doesn't seem impossibly difficult to add... it could work by allowing users to specify the --key
option multiple times
$ csv-diff one.csv two.csv --key=id --key=secondary
Part of the work would be teaching the CSV loading function to work with compound keys and create the internal ID as a tuple of values:
Lines 10 to 15 in 825a28c
The human_text()
function would then need to learn how to display a compound ID.
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Thanks Simon,
I must admit that I was forgetting that our CSVs do typically have a URI per row too which is unique, so we could use that for purposes of getting a diff. May still be useful for others though.
For human_text()
, perhaps some way of passing in a formatting string? In Python terms we'd want something likef"{r['lettercode']} {r['series']}/{r['piece']}/{r['item']} image {r['ordinal']}"
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Seconding this, I'd find this very useful. As best as I can find, there are no other similar libraries that allow for composite keys, but I already use and am very happy with this package.
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Hi @simonw I've made progress on this feature and would like to share. Would you grant me write access?
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Related Issues (20)
- Release notes for 1.0 HOT 1
- Support JSON inputs too HOT 3
- Handle case where new keys are added to JSON objects (--format json) HOT 2
- ERROR: CSV parse error HOT 3
- Support using row number as a key
- Support for empty CSV files HOT 1
- Option to Ignore case in comparison?
- Allow all kind of separator for csv files for example ";" HOT 1
- I store the csv of two tables with multiple primary keys. How do I pass in multiple values in the key of load_csv? HOT 2
- KeyError executing in Google Colab HOT 1
- KeyError in load_csv HOT 2
- ENH: Add csv-diff and tsv-diff to topics so that it's shown via google HOT 2
- Q: What is default of `key`? What happens when no `key` passed?
- BUG: new line at end of file causes crash HOT 1
- BUG: incomplete last line causes unhandled error that's hard to debug
- BUG: Duplicate key causes undefined behaviour, user not warned
- option to modify key before comparison
- support for semicolon separated csv
- Error when column name contains `.` (dot) HOT 1
- Option to also print all fields in changed rows HOT 4
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