Neo4j使用Cypher语句实战(索引,数据备份,导入)

8.1创建索引

创建单一属性索引

语法: CREATE INDEX ON :Lable(property)

CREATE INDEX ON :Person(name)

给数据库的:Person标签的name属性创建索引

创建复合属性索引

语法:CREATE INDEX ON :Label(prop1,...,propN)

 CREATE INDEX ON :Person(age,country)

8.2查询索引

CALL db.Indexes

8.3删除索引

语法:DROP INDEX ON :LABEL(property）

DROP INDEX ON :Person(firstname)

语法:DROP INDEX ON :LABEL(prop1,...,propN)

DROP INDEX ON :Person(age,country)

8.3 备份与导入

备份/导出要以管理员身份运行

neo4j-admin dump --database=graph.db --to=E:\neo4jdata

Neo4j使用Cypher语句实战(索引,数据备份,导入)
导入db

neo4j-admin load --from=E:\neo4jdata\graph.db.dump --database=graph.db --force

导入csv

LOAD CSV WITH HEADERS FROM "‪G:\importData.csv"
AS line
return line.n

Neo4j使用Cypher语句实战(索引,数据备份,导入)
csv内容

USING PERIODIC COMMIT
LOAD CSV FROM 'file:///concept.csv' AS row
CREATE (n:概念{name:row[1],uuid:row[0]})

csv 不带header方式
不带hearer 就把csv第一行的header(uuid,name,domain)去掉

USING PERIODIC COMMIT
LOAD CSV  FROM "file:///executive_stock.csv" AS row
MATCH (n:高管 {uuid: row[0]})
MATCH (m:企业 {uuid: row[1]})
MERGE (n)-[:RE{name:row[2]}]->(m)

带header方式

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM 'file:///industry.csv' AS row
CREATE (:行业{name:row.name,uuid:row.uuid})