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Better merge array by key example

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Mike Farah
2021-11-29 20:53:36 +11:00
parent 51e946e6ff
commit 4c7c0b83aa
2 changed files with 9 additions and 5 deletions
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pkg/yqlib/operator_multiply_test.go
+5 -3
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@@ -30,10 +30,12 @@ var mergeArrayWithAnchors = `sample:
`
var mergeArraysObjectKeysText = `There are two parts of the complex expression. The first part is doing the hard work, it creates a map from the arrays keyed by '.a',
so that there are no duplicates. The second half converts that map back to an array.`
so that there are no duplicates. The second half converts that map back to an array.
var mergeExpression = `
((.[] | {.a: .}) as $item ireduce ({}; . * $item )) as $uniqueMap
To use this, you will need to update '.[]' to be the expression to your array (e.g. .my.array[]), and '.a' to be the key field of your array (e.g. '.name')
`
var mergeExpression = `((.[] | {.a: .}) as $item ireduce ({}; . * $item )) as $uniqueMap
| ( $uniqueMap | to_entries | .[]) as $item ireduce([]; . + $item.value)
`