Normalize as boolean

The APOC library contains a procedure that can be used to translate STRING values into BOOLEAN values.

Procedure for translating string values into booleans

Qualified Name Type

apoc.refactor.normalizeAsBoolean

apoc.refactor.normalizeAsBoolean(entity ANY, propertyKey STRING, trueValues LIST<ANY>, falseValues LIST<ANY>) - refactors the given property to a BOOLEAN.

Procedure

Example

The below example will further explain this procedure.

The following creates a graph containing NODE values with BOOLEAN properties represented in different formats:
CREATE (:Person {prop: 'Y', name:'A'}),
       (:Person {prop: 'Yes', name:'B'}),
       (:Person {prop: 'NO', name:'C'}),
       (:Person {prop: 'X', name:'D'})
apoc.refactor.normalizeAsBoolean.dataset

We want to transform some properties into a BOOLEAN, Y, Yes into true and the properties NO into false. The other properties that don’t match these possibilities will be set as null.

The following normalizes all applicable BOOLEAN values for all NODE values that have the prop property:
MATCH (n)
CALL apoc.refactor.normalizeAsBoolean(n,'prop',['Y','Yes'],['NO'])
WITH n
ORDER BY n.id
RETURN n.prop AS prop

If the above query is run, the following will be returned:

apoc.refactor.normalizeAsBoolean