StreamAggregate and ComputeScalar occur when an aggregate function (MIN, MAX, COUNT, AVG, or SUM) is used in an aggregate query. SELECTCOUNT (*), AVG (Value) fromm2c_10 min and MAX functions require stream aggregation. Other functions in the execution plan require stream aggregation followed by one or more scalar calculation operations. -12. Execution of stream aggregation and scalar computing
Aggregation
Stream Aggregate and Compute Scalar occur when an Aggregate function (MIN, MAX, COUNT, AVG, or SUM) is used in a query.
Select count (*), AVG (Value) FROM M2C_10
The MIN and MAX functions require stream aggregation. Other functions in the execution plan require stream aggregation followed by one or more scalar calculation operations.
-12.Execution Plan of stream aggregation and scalar computing
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