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29 lines
942 B
C++
29 lines
942 B
C++
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#include <Functions/arrayEnumerateExtended.h>
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#include <Functions/FunctionFactory.h>
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namespace DB
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{
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/** arrayEnumerateUniq(arr)
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* - outputs an array parallel (having same size) to this, where for each element specified
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* how many times this element was encountered before (including this element) among elements with the same value.
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* For example: arrayEnumerateUniq([10, 20, 10, 30]) = [1, 1, 2, 1]
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* arrayEnumerateUniq(arr1, arr2...)
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* - for tuples from elements in the corresponding positions in several arrays.
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*/
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class FunctionArrayEnumerateUniq : public FunctionArrayEnumerateExtended<FunctionArrayEnumerateUniq>
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{
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using Base = FunctionArrayEnumerateExtended<FunctionArrayEnumerateUniq>;
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public:
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static constexpr auto name = "arrayEnumerateUniq";
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using Base::create;
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};
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void registerFunctionArrayEnumerateUniq(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionArrayEnumerateUniq>();
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}
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}
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