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  1. stackoverflow.com › questions › 22498054How to create unique constraint involving multiple properties in...

    25 lut 2017 · neo4j (2.0.1) does not currently support a uniqueness constraint that covers multiple properties simultaneously. However, I can think of a workaround that might be acceptable, depending on your use cases. Let's say you want properties a, b, and c to be unique as a group.

  2. neo4j.com › docs › cypher-manualCreate, show, and drop constraints - Cypher Manual - Neo4j Graph...

    Single property uniqueness constraints are created with the following commands: Node property uniqueness constraints: CREATE CONSTRAINT constraint_name FOR (n:Label) REQUIRE n.property IS UNIQUE. Relationship property uniqueness constraints: CREATE CONSTRAINT constraint_name FOR ()- [r:REL_TYPE]- () REQUIRE r.property IS UNIQUE. Introduced in 5.7.

  3. www.geeksforgeeks.org › neo4j-create-constraintNeo4j Create Constraint - GeeksforGeeks

    3 wrz 2019 · Uniqueness Constraints: This Constraint contain a unique value, in his constraint two same lebel can’t share a same id. Query: CREATE CONSTRAINT ON(l:Language) ASSERT l.id IS UNIQUE. Output: View the Constraint::schema. Output: Test the Constraint: Here we will try to add another node into that database with a redundant id value(004). Query:

  4. www.quackit.com › neo4j › tutorialNeo4j - Create a Constraint using Cypher - Quackit Tutorials

    In Neo4j, you can create uniqueness constraints and property existence constraints. Uniqueness Constraint Specifies that the property must contain a unique value (i.e. no two nodes with an Artist label can share a value for the Name property.)

  5. www.tutorialspoint.com › neo4j › neo4j_create_unique_constraintNeo4j - Create Unique Constraint - Online Tutorials Library

    Create UNIQUE Constraint. Neo4j CQL provides "CREATE CONSTRAINT" command to create unique constraints on node or relationship properties. Syntax. Following is the syntax to create a UNIQUE constraint in Neo4j. MATCH (root {name: "Dhawan"}) CREATE UNIQUE (root)-[:LOVES]-(someone) RETURN someone Example

  6. man.hubwiz.com › docset › Neo4jThe Neo4j Manual v3.1.0-SNAPSHOT 14.2. Constraints - hubwiz.com

    To create a constraint that makes sure that your database will never contain more than one node with a specific label and one property value, use the IS UNIQUE syntax. Query CREATE CONSTRAINT ON (book:Book) ASSERT book.isbn IS UNIQUE

  7. graphacademy.neo4j.com › courses › importing-cypherUnique IDs and Constraints | GraphAcademy - Neo4j

    The syntax for creating a unique constraint on a property is: FOR (n: LabelName) The constraint is for a property on all nodes with a specified label. The constraint_name is optional, but it is good practice to specify one. If you do not specify a constraint name, Neo4j will create one for you.

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