2021-11-03 04:00:58 +00:00
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# Union
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This operator is used to combine different results together.
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## Combine scalars
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Running
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```bash
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2022-01-27 06:21:10 +00:00
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yq --null-input '1, true, "cat"'
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2021-11-03 04:00:58 +00:00
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```
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will output
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```yaml
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1
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true
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cat
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```
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## Combine selected paths
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Given a sample.yml file of:
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```yaml
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a: fieldA
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b: fieldB
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c: fieldC
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```
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then
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```bash
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2022-01-27 06:21:10 +00:00
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yq '.a, .c' sample.yml
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2021-11-03 04:00:58 +00:00
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```
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will output
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```yaml
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fieldA
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fieldC
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```
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