SUM(recordset, value, [ , expression ] [, KEYED ])

SUM( valuelist [, UNORDERED | ORDERED( bool ) ] [, STABLE | UNSTABLE ] [, PARALLEL [ ( numthreads ) ] ] [, ALGORITHM( name ) ] )

recordsetThe set of records to process. This may be the name of a dataset or a record set derived from some filter condition, or any expression that results in a derived record set. This also may be the keyword GROUP to indicate finding the sum of values of the field in a group, when used in a RECORD structure to generate crosstab statistics.
valueThe expression to sum.
expressionOptional. A logical expression indicating which records to include in the sum. Valid only when the recordset parameter is the keyword GROUP to indicate summing the elements in a group.
KEYEDOptional. Specifies the activity is part of an index read operation, which allows the optimizer to generate optimal code for the operation.
valuelistA comma-delimited list of expressions to find the sum of. This may also be a SET of values.
UNORDEREDOptional. Specifies the output record order is not significant.
ORDEREDSpecifies the significance of the output record order.
boolWhen False, specifies the output record order is not significant. When True, specifies the default output record order.
STABLEOptional. Specifies the input record order is significant.
UNSTABLEOptional. Specifies the input record order is not significant.
PARALLELOptional. Try to evaluate this activity in parallel.
numthreadsOptional. Try to evaluate this activity using numthreads threads.
ALGORITHMOptional. Override the algorithm used for this activity.
nameThe algorithm to use for this activity. Must be from the list of supported algorithms for the SORT function's STABLE and UNSTABLE options.
Return:SUM returns a single value.

The SUM function returns the additive sum of the value in each record of the recordset or valuelist.


personRecord := RECORD
  STRING first_name;
  STRING last_name;
  INTEGER hourly_wage;  
person := DATASET([{'923','James','Jones',15},
                   {'929','Joe','Yung',75}], personRecord);
SumOfHourlyWage := SUM(person,person.hourly_wage); // total all hourly wage values

SumVal1 := SUM(4,8,16,2,1); //returns 31
SetVals := [4,8,16,2,1];
SumVal2 := SUM(SetVals); //returns 31