add indexes and constraints content #36
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martinohanlon
approved these changes
May 15, 2024
documentation/movies.workspace.adoc
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| Note that you can also add constraints to your data to ensure uniqueness for example. | ||
| Adding constraints automatically adds a correpsonding index. | ||
| See link:https://neo4j.com/docs/cypher-manual/current/constraints/[Cypher Manual -> Constraints] for more information. |
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Do you need to add a ^ to the hyperlink to open in a new window?
e.g.
https://neo4j.com/docs/cypher-manual/current/constraints/[Cypher Manual -> Constraints^]
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Yes, you're right! I'll amend! Thanks!
jexp
reviewed
May 15, 2024
| @@ -35,9 +35,6 @@ image::movie-model.png[] | |||
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| [source,cypher] | |||
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| CREATE CONSTRAINT movie_title IF NOT EXISTS FOR (m:Movie) REQUIRE m.title IS UNIQUE; | |||
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please don't change it, it needs to stay here. other wise the performance will be affected as each MERGE needs to do a full label-scan to find the relevant nodes.
jexp
reviewed
May 15, 2024
| @@ -702,6 +699,22 @@ MATCH path = (person)-[:ACTED_IN]->(m)<-[:DIRECTED]-(d) | |||
| RETURN path; | |||
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| To aid query performance, you can add indexes to your data. | |||
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Either move this to the beginning, but we should ensure that people execute this cypher-block, or keep it in the MERGE statement.
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