Module datafusion_physical_plan::aggregates
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Aggregates functionalities
Structs§
- Hash aggregate execution plan
- Represents
GROUP BY
clause in the plan (including the more general GROUPING SET) In the case of a simpleGROUP BY a, b
clause, this will contain the expression [a, b] and a single group [false, false]. In the case ofGROUP BY GROUPING SET/CUBE/ROLLUP
the planner will expand the expression into multiple groups, using null expressions to align each group. For example, with a group by clauseGROUP BY GROUPING SET ((a,b),(a),(b))
the planner should create aPhysicalGroupBy
like
Enums§
- Hash aggregate modes
Functions§
- Concatenates the given slices.