Union

This operator is used to combine different results together.

{% hint style="warning" %} Note that versions prior to 4.18 require the 'eval/e' command to be specified.

yq e <exp> <file> {% endhint %}

Combine scalars

Running

yq --null-input '1, true, "cat"'

will output

1
true
cat

Given a sample.yml file of:

a: fieldA
b: fieldB
c: fieldC

then

yq '.a, .c' sample.yml

will output

fieldA
fieldC