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Mike Farah 2022-03-29 13:35:30 +11:00
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usage/tips-and-tricks.md
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@ -75,6 +75,13 @@ To merge all given yaml files into one, use the `reduce` operator with the `*` (
yq ea '. as $item ireduce ({}; . * $item )' file1.yml file2.yml ... yq ea '. as $item ireduce ({}; . * $item )' file1.yml file2.yml ...
``` ```
## Merge - showing the source file and line
To see the original source file and line number of your merged result, you can pre-process the files and add that information in as line comments, then perform the merge.
```bash
yq ea '(.. lineComment |= filename + ":" + line) | select(fi==0) * select(fi==1)' data1.yaml data2.yaml
```
## Merge an array of objects by key ## Merge an array of objects by key
See [here](https://mikefarah.gitbook.io/yq/operators/multiply-merge#merge-arrays-of-objects-together-matching-on-a-key) for a working example. See [here](https://mikefarah.gitbook.io/yq/operators/multiply-merge#merge-arrays-of-objects-together-matching-on-a-key) for a working example.