GroupIndexView

datafusion_physical_plan::aggregates::group_values::multi_group_by

Struct GroupIndexView 

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struct GroupIndexView(u64);
Expand description

The view of indices pointing to the actual values in GroupValues

If only single group index represented by view, value of view is just the group index, and we call it a inlined view.

If multiple group indices represented by view, value of view is the actually the index pointing to group indices, and we call it non-inlined view.

The view(a u64) format is like: +———————+———————————————+ | inlined flag(1bit) | group index / index to group indices(63bit) | +———————+———————————————+

inlined flag: 1 represents non-inlined, and 0 represents inlined

Tuple Fields§

§0: u64

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impl GroupIndexView

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pub fn is_non_inlined(&self) -> bool

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pub fn new_inlined(group_index: u64) -> Self

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pub fn new_non_inlined(list_offset: u64) -> Self

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pub fn value(&self) -> u64

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impl Clone for GroupIndexView

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fn clone(&self) -> GroupIndexView

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GroupIndexView

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for GroupIndexView

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fn eq(&self, other: &GroupIndexView) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for GroupIndexView

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impl Eq for GroupIndexView

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impl StructuralPartialEq for GroupIndexView

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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