Unique

This is used to filter out duplicated items in an array. Note that the original order of the array is maintained.
Unique array of scalars (string/numbers)
Note that unique maintains the original order of the array.
Given a sample.yml file of:
- 2
- 1
- 3
- 2
then
yq 'unique' sample.yml
will output
- 2
- 1
- 3
Unique nulls
Unique works on the node value, so it considers different representations of nulls to be different
Given a sample.yml file of:
- ~
- null
- ~
- null
then
yq 'unique' sample.yml
will output
- ~
- null
Unique all nulls
Run against the node tag to unique all the nulls
Given a sample.yml file of:
- ~
- null
- ~
- null
then
yq 'unique_by(tag)' sample.yml
will output
- ~
Unique array object fields
Given a sample.yml file of:
- name: harry
  pet: cat
- name: billy
  pet: dog
- name: harry
  pet: dog
then
yq 'unique_by(.name)' sample.yml
will output
- name: harry
  pet: cat
- name: billy
  pet: dog

Union

Variable Operators

Last modified 1mo ago