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Here’s the table of contents: 修改节点标签 修改边类型 修改节点标签 //Set a label on a node MATCH (n {name: 'Stefan'}) SET n:German RETURN n.name, labels(n) AS labels //Set multiple labels on a node MATCH (n {name: 'George'}) SET n:Swedish:Bossman RETURN n.name, labels(n) AS labels 修改边类型 //改变关系类型/名称，关系现有属性不受影响 MATCH p=()-[r:ACTED_IN]->() WHERE ID(r)...

Here’s the table of contents: 脚本内容 脚本内容 #!/usr/bin/env bash ################### config need to clean logs dir BASEPATH=$(pwd) CQLDIR=${BASEPATH}/cql/ echo logs absolute path:${CQLDIR} ################### get file name array function getFileArray(){ cd ${CQLDIR} j=0 for i in `ls` do folder_list[j]=${i} j=`e...

Here’s the table of contents: 脚本内容【当前目录的logs文件夹下日志清除】 脚本内容【当前目录下所有.log结尾文件清除】 脚本内容【当前目录的logs文件夹下日志清除】 #!/usr/bin/env bash ################### log clean shell ################### delay 1s/1m/1h/1d DELAY=1d echo clean log shell execute delay is:${DELAY} ################### config need to clean logs dir BASEPATH=$(pwd) LOGDIR=${BASEPATH}...

Here’s the table of contents: Browser Setting Browser Setting browser.retain_connection_credentials=false

Here’s the table of contents: 索引 图数据库报错 修改最大可打开文件数 索引 CREATE CONSTRAINT ON (n:LABEL1_20211231_1493252252_1493252293) ASSERT n.code IS UNIQUE; CREATE CONSTRAINT ON (n:LABEL2_20211231_1493252252_1493252293) ASSERT n.code IS UNIQUE; CREATE CONSTRAINT ON (n:LABEL3_20211231_1493252252_1493252293) ASSERT n.code IS UNIQUE; CREATE CONSTRAINT ON...

Here’s the table of contents: 加载CSV文件 加载CSV文件 读取为数据列表 //LOAD CSV FROM 'file:/artists.csv' AS line LOAD CSV FROM "http://data.neo4j.com/examples/person.csv" AS line RETURN * 读取为数据列表时指定CSV分隔符 LOAD CSV FROM "http://data.neo4j.com/examples/person.csv" AS line FIELDTERMINATOR '\t' RETURN * 读取为数据对象 //LOAD CSV WI...

Here’s the table of contents: VPN代理问题 VPN代理问题 设置代理 git config --global http.proxy 127.0.0.1:7890 git config --global https.proxy 127.0.0.1:7890 解除代理 git config --global --unset http.proxy git config --global --unset https.proxy 配置查看 git config --global http.proxy #查看git的http代理配置 git config --global https.p...

Here’s the table of contents: 一、模拟超级节点 二、优化超级节点 一、模拟超级节点 数据建模 (人物 {name})-[发表 {score}]->(文章 {number}) 数据生成 MERGE (per:人物 {name:'Superman'}) RETURN ID(per) AS id; //执行时间1~2秒 CALL apoc.periodic.iterate('WITH RANGE(0,1000000) AS list UNWIND list AS num RETURN num','CREATE (atc:文章 {number:num})', {parallel:true,batchSi...