将csv导入neo4j缺失节点答案

【问题标题】：import csv into neo4j missing node将csv导入neo4j缺失节点
【发布时间】：2017-12-03 09:13:37
【问题描述】：

我想将以下 CSV 文件导入 neo4j

:START_ID,:END_ID,:TYPE
1, 2, call
2, 3, text
3, 2, text
6, 3, text
5, 6, text
5, 4, call
4, 1, call
4, 5, text
1, 5, call
1, 8, call
6, 8, call
6, 8, text
8, 6, text
7, 1, text

和

person:ID,name,value:int
1,Alice,1
2,Bob,0
3,Charlie,0
4,David,0
5,Esther,0
6,Fanny,0
7,Gabby,0
8,XXX,1

通过导入

DATA_DIR_SAMPLE=/data_network/
$NEO4J_HOME/bin/neo4j-admin import --into ${NEO4J_HOME}/data/databases/social.db \
  --nodes:Person ${DATA_DIR_SAMPLE}/v.csv \
  --relationships ${DATA_DIR_SAMPLE}/e.csv \
  --ignore-empty-strings true \
  --skip-duplicate-nodes true \
  --skip-bad-relationships true \
  --bad-tolerance  1500 \
  --multiline-fields=true

告诉我，所有关系都包含缺失的节点。这里有什么问题？

InputRelationship:
   source: /data_network/e.csv:2
   startNode: 1 (global id space)
   endNode:  2 (global id space)
   type:  call
 referring to missing node  2
InputRelationship:
   source: /data_network/e.csv:3
   startNode: 2 (global id space)
   endNode:  3 (global id space)
   type:  text
 referring to missing node  3
InputRelationship:
   source: /data_network/e.csv:4
   startNode: 3 (global id space)
   endNode:  2 (global id space)
   type:  text
 referring to missing node  2
InputRelationship:
   source: /data_network/e.csv:5
   startNode: 6 (global id space)
   endNode:  3 (global id space)
   type:  text
 referring to missing node  3
InputRelationship:
   source: /data_network/e.csv:6
   startNode: 5 (global id space)
   endNode:  6 (global id space)
   type:  text
 referring to missing node  6
InputRelationship:
   source: /data_network/e.csv:7
   startNode: 5 (global id space)
   endNode:  4 (global id space)
   type:  call
 referring to missing node  4
InputRelationship:
   source: /data_network/e.csv:8
   startNode: 4 (global id space)
   endNode:  1 (global id space)
   type:  call
 referring to missing node  1
InputRelationship:
   source: /data_network/e.csv:9
   startNode: 4 (global id space)
   endNode:  5 (global id space)
   type:  text
 referring to missing node  5
InputRelationship:
   source: /data_network/e.csv:10
   startNode: 1 (global id space)
   endNode:  5 (global id space)
   type:  call
 referring to missing node  5
InputRelationship:
   source: /data_network/e.csv:11
   startNode: 1 (global id space)
   endNode:  8 (global id space)
   type:  call
 referring to missing node  8
InputRelationship:
   source: /data_network/e.csv:12
   startNode: 6 (global id space)
   endNode:  8 (global id space)
   type:  call
 referring to missing node  8
InputRelationship:
   source: /data_network/e.csv:13
   startNode: 6 (global id space)
   endNode:  8 (global id space)
   type:  text
 referring to missing node  8
InputRelationship:
   source: /data_network/e.csv:14
   startNode: 8 (global id space)
   endNode:  6 (global id space)
   type:  text
 referring to missing node  6
InputRelationship:
   source: /data_network/e.csv:15
   startNode: 7 (global id space)
   endNode:  1 (global id space)
   type:  text
 referring to missing node  1

【问题讨论】：

标签： csv graph neo4j

【解决方案1】：

添加一个额外的：标签专栏正在解决这个问题。

【讨论】：

您必须在哪个文件中添加:LABEL 列才能解决此问题？
很遗憾，我不记得了。但是两个都试一下。
所以问题还是没有答案

【解决方案2】：

您需要在节点 csv 文件中添加一个 :LABEL 列，以便告诉 neo4j 您正在为节点创建什么标签。它应该看起来像这样：

person:ID,name,value:int,:LABEL
1,Alice,1,person
2,Bob,0,person
3,Charlie,0,person
.
.
.

然后您需要提及的是，您正在使用关系文件中的标签person 连接节点。

:START_ID(person),:END_ID(person),:TYPE
1, 2, call
2, 3, text
3, 2, text
.
.
.

注意：您可以使用任何其他标签来代替person。

【讨论】：