| Excerpt |
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Generates an array of all unique elements among one or more arrays. |
- Inputs are column names or array literals.
- If an element appears twice in one or more arrays, it is listed once in the output array.
Array literal reference example:
| D lang syntax |
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| RawWrangle | true |
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| Type | ref |
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| showNote | true |
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| WrangleText | derive type:single value:arrayunique([["A","B"],["A","C"]]) |
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arrayunique([["A","B"],["A","C"]]) |
Output: Returns a single array:
Single-column reference example:
| D lang syntax |
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| RawWrangle | true |
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| Type | ref |
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| showNote | true |
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| WrangleText | derive type:single value:arrayunique([array1]) as:'unique_Array1' |
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arrayunique([array1]) |
Output: Returns a single array of all unique elements in array1 .
Multi-column reference example:
| D lang syntax |
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| RawWrangle | true |
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| Type | ref |
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| showNote | true |
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| WrangleText | derive type:single value:arrayunique([array1,array2]) as:'unique_Array2' |
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arrayunique([array1,array2]) |
Output: Returns a single array listing all unique elements in array1 and array2 .
| D lang syntax |
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| RawWrangle | true |
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| Type | syntax |
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| showNote | true |
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| WrangleText | derive type:single value:arrayunique (array_ref1,array_ref2) |
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arrayunique(array_ref1,array_ref2) |
| Argument | Required? | Data Type | Description |
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| array_ref1 | Y | string or array | Name of first column or first array literal to apply to the function |
| array_ref2 | N | string or array | Name of second column or second array literal to apply to the function |
array_ref1, array_ref2
Array literals or names of the array columns whose unique elements you want to derive.
| Required? | Data Type | Example Value |
|---|
| Yes (at least one) | Array literal or column reference | myArray1, myArray2 |
Example - Simple unique example
| Include Page |
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| EXAMPLE - Nested Functions |
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| EXAMPLE - Nested Functions |
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