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Compare Operators
Comparison operators (>, >=, <, <=) can be used for comparing scalar values of the same time.
The following types are currently supported:
  • numbers
  • strings
  • datetimes

Related Operators

  • equals / not equals (==, !=) operators here
  • boolean operators (and, or, any etc) here
  • select operator here
Note that versions prior to 4.18 require the 'eval/e' command to be specified.
yq e <exp> <file>

Compare numbers (>)

Given a sample.yml file of:
a: 5
b: 4
then
yq '.a > .b' sample.yml
will output
true

Compare equal numbers (>=)

Given a sample.yml file of:
a: 5
b: 5
then
yq '.a >= .b' sample.yml
will output
true

Compare strings

Compares strings by their bytecode.
Given a sample.yml file of:
a: zoo
b: apple
then
yq '.a > .b' sample.yml
will output
true

Compare date times

You can compare date times. Assumes RFC3339 date time format, see date-time operators for more information.
Given a sample.yml file of:
a: 2021-01-01T03:10:00Z
b: 2020-01-01T03:10:00Z
then
yq '.a > .b' sample.yml
will output
true

Both sides are null: > is false

Running
yq --null-input '.a > .b'
will output
false

Both sides are null: >= is true

Running
yq --null-input '.a >= .b'
will output
true
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Related Operators
Compare numbers (>)
Compare equal numbers (>=)
Compare strings
Compare date times
Both sides are null: > is false
Both sides are null: >= is true