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v4.5
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    v4.5

      LIMIT

      Vue d’ensemble

      L'instruction LIMIT restreint le nombre maximal d'enregistrements à conserver dans la table de travail actuelle. Un entier non négatif doit être spécifié dans l'instruction LIMIT.

      <instruction limite> ::= "LIMIT" <entier non négatif>
      

      Exemple de Graph

      Les exemples suivants sont exécutés sur ce graph :

      Pour créer ce graph, exécutez la requête suivante sur un graph vide :

      INSERT (p1:Paper {_id:'P1', title:'Efficient Graph Search', score:6, author:'Alex'}),
             (p2:Paper {_id:'P2', title:'Optimizing Queries', score:9, author:'Alex'}),
             (p3:Paper {_id:'P3', title:'Path Patterns', score:7, author:'Zack'}),
             (p1)-[:Cites {weight:2}]->(p2),
             (p2)-[:Cites {weight:1}]->(p3)
      

      Limitation des Enregistrements Retournés

      MATCH (n:Paper)
      RETURN n.title LIMIT 2
      

      Résultat :

      n.title
      Efficient Graph Search
      Optimizing Queries

      Limitation des Enregistrements Transmis

      MATCH (n:Paper) LIMIT 1
      MATCH p = (n)->()
      RETURN p
      

      Résultat :

      p
      (:Paper {_id: "P2", score: 9, title: "Optimizing Queries", author: "Alex"})-[:Cites {weight: 1}]->(:Paper {_id: "P3", score: 7, title: "Path Patterns", author: "Zack"})

      Limitation des Enregistrements Ordonnés

      MATCH (n:Paper)
      ORDER BY n.title DESC 
      LIMIT 1
      RETURN n.title
      

      Résultat :

      n.title
      Path Patterns
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