support group array last #902
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support group array last Introduce groupArrayLast() (useful to store last X values) (#44521) * Cleanup DataTypeCustomSimpleAggregateFunction::checkSupportedFunctions() Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com> * Remove unused GroupArrayGeneralListImpl Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com> * Introduce groupArrayLast() (useful to store last X values) Also do some refactoring to make code cleaner: - rename insert() to insertWithSampler() (since it is used only for groupArraySample()) - split merge methods into Last/RNG/... Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com> Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com> Bugfix/issue 7122 group array missing arg (#7135) (#7198)
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yl-lisen
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Mar 6, 2025
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This function returns the last N elements of an array.
Syntax:
group_array_last(x, max_size)
Parameters
Example
Query:
select group_array_last(number+1, 2) numbers from numbers(10)Result:
Related to #901