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group (streaming)

Short Description

The group (streaming) aggregate node is used for functions such as count(), max(), min() sum() and avg().

Detailed Description

The group (streaming) aggregate node is used for functions such as COUNT(), MAX(), MIN() SUM() or AVG().

A supporting index is in place allowing group aggregation to take place via streaming rather than building a hash table. This gives query performance advantages but beware of the maintenance overhead of having too many indexes.

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