Following are the supported inbuilt aggregate functions of Siddhi
sum
<long|double> sum(<int|long|double|float> arg)
- Extension Type: Aggregate Function
- Description: Sums all the events.
- Parameter: arg: The value that need to be summed.
- Return Type: Returns long if the input parameter type is int or long and Returns double if the input parameter type is float or double.
- Examples:
sum(20)returns sum of 20s as a long value for each event arrival and expiry.sum(temp)returns the sum of all temp attributes based on each event arrival and expiry.
avg
<double> avg(<int|long|double|float> arg)
- Extension Type: Aggregate Function
- Description: Calculates the average for all the events.
- Parameter: arg: The value that need to be averaged.
- Return Type: Returns calculated average value as a double.
- Examples: avg(temp) returns the average temp value for all the events based on their arrival and expiry.
max
<int|long|double|float> max(<int|long|double|float> arg)
- Extension Type: Aggregate Function
- Description: Returns the max value for all the events.
- Parameter: arg: The value that need to be compared to find the max value.
- Return Type: Returns max value in same type as the input.
- Examples: max(temp) returns the maximum temp value recorded for all the events based on their arrival and expiry.