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Transformations: Add an All Unique Values Reducer #48653

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merged 7 commits into from May 4, 2022
Merged

Transformations: Add an All Unique Values Reducer #48653

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f20b1d9
Add support for all unique values to fieldReducer
josiahg May 3, 2022
21241cf
Merge remote-tracking branch 'origin/main' into jay/transform-group-b…
ryantxu May 3, 2022
7fc5e85
add a test
ryantxu May 3, 2022
4741f63
Update packages/grafana-data/src/transformations/fieldReducer.ts
josiahg May 4, 2022
6d4ef19
Update packages/grafana-data/src/transformations/fieldReducer.ts
josiahg May 4, 2022
af8c109
Update fieldReducer.ts
josiahg May 4, 2022
4472366
Update fieldReducer.test.ts
josiahg May 4, 2022
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10 changes: 10 additions & 0 deletions packages/grafana-data/src/transformations/fieldReducer.ts
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Expand Up @@ -25,6 +25,7 @@ export enum ReducerID {
allIsZero = 'allIsZero',
allIsNull = 'allIsNull',
allValues = 'allValues',
allUniqueValues = 'allUniqueValues',
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}

// Internal function
Expand Down Expand Up @@ -237,6 +238,15 @@ export const fieldReducers = new Registry<FieldReducerInfo>(() => [
standard: false,
reduce: (field: Field) => ({ allValues: field.values.toArray() }),
},
{
id: ReducerID.allUniqueValues,
name: 'All unique values',
description: 'Returns an array with all unique values',
standard: false,
reduce: (field: Field) => ({
allUniqueValues: field.values.toArray().filter((n, i) => field.values.toArray().indexOf(n) === i),
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}),
},
]);

export function doStandardCalcs(field: Field, ignoreNulls: boolean, nullAsZero: boolean): FieldCalcs {
Expand Down