apoc.coll.sumLongs

Details
Syntax	`apoc.coll.sumLongs(coll)`
Description	Returns the sum of all the `INTEGER \| FLOAT` in the `LIST<INTEGER \| FLOAT>`.
Arguments	Name	Type	Description
	`coll`	`LIST<INTEGER \| FLOAT>`	The list of numbers to create a sum from after each is cast to a java Long value.
Returns	`INTEGER`

Usage examples

The following examples compute the sum of numeric values in a list, casting them to Long (Cypher integer) values in the process, using both APOC and Cypher:

apoc.coll.sumLongs

WITH [1.5,2.5,3.6,4.3,5.2] AS list
RETURN apoc.coll.sumLongs(list) AS output

Using Cypher’s UNWIND, sum() and toInteger()

WITH [1.5,2.5,3.6,4.3,5.2] AS list
RETURN reduce(sum = 0, x IN toIntegerList(list) | sum + x) AS output

Results
Output
15