修复 Neo4j 中的随机种子

Question

I wonder how you would fix the seed of a random number generator in Neo4j in order to make reproducible tries for development purposes. For instance, how would you fix the seed in the following example so that it always yields the same output?

MATCH (p:Person)-[:KNOWS]->() 
WHERE rand() < 0.25
RETURN p LIMIT 100

Answer 1

I checked and I can confirm this is not supported at the moment. Implementation-wise , the function relies on ThreadLocalRandom which does even support custom seeds.