apoc.atomic.subtract
Procedure
apoc.atomic.subtract(container ANY, propertyName STRING, number INTEGER \| FLOAT, retryAttempts INTEGER)
- sets the property of a value to itself minus the given INTEGER
or FLOAT
value.
The procedure then sets the property to the returned sum.
Signature
apoc.atomic.subtract(container :: ANY, propertyName :: STRING, number :: INTEGER \| FLOAT, retryAttempts = 5 :: INTEGER) :: (container :: ANY, property :: STRING, oldValue :: ANY, newValue :: ANY)
Input parameters
Name | Type | Default |
---|---|---|
container |
ANY |
null |
propertyName |
STRING |
null |
number |
INTEGER | FLOAT |
null |
retryAttempts |
INTEGER |
5 |
Usage examples
The examples in this section are based on the following sample graph:
CREATE (:Person {name:'Tom',age: 40})
CREATE (:Person {name:'Will',age: 35})
CREATE (:Person {name:'David', children: ['Anne','Sam','Paul']})
CREATE (:Person {name:'John', cars: ['Class A','X3','Focus']})
CREATE (:Person {name:'Ryan', salary1:1800, salary2:1500});
The following subtracts 10 from the property age
for Tom
:
MATCH (n:Person {name:'Tom'})
CALL apoc.atomic.subtract(n,'age',10,5)
YIELD oldValue, newValue
RETURN oldValue, newValue;
oldValue | newValue |
---|---|
40 |
30 |