Detect and migrate string properties of nodes to dedicated types

README.md

Install APOC https://neo4j.com/docs/labs/apoc/current/introduction/#installation for your database. Allow unrestricted access dbms.security.procedures.unrestricted=apoc.* Follow the ideas in the scripts above.

graph.cypher

create (m:Mixed {createdAt: '2015-07-21T21:40:32.142+0100', name:'old'})
create (m:Mixed {createdAt: datetime(), name:'new'})

migrate.cypher

match (m:Mixed) 
where apoc.meta.types(m).createdAt = 'STRING'
set m.createdAt = datetime(m.createdAt)
RETURN m

// See https://neo4j.com/docs/cypher-manual/current/functions/temporal/datetime/#functions-datetime-create-string
// for parsing options