Neo4J ClientError.Statement.SyntaxError

从CSV文件加载数据时，我得到Neo.ClientError.Statement.SyntaxError

Neo.ClientError.Statement.SyntaxError:输入“h”无效：应为 “i/i”（第5行第3列（偏移量：189））“合并（邮政编码：邮政编码 {代码：row.zip_cd，类型：'location'}）”

这是我的疑问：

 Using Periodic Commit
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
Merge (State_Code:State_Code {code: row.st_cd})
    where not row.st_cd is null

Merge (Zip_Code:Zip_Code {code: row.zip_cd,type:'location'})
    where not row.zip_cd is null
Merge (Zip_Code)-[:located_in]->(State_Code)

csv中有一些空白记录，因此我使用了not null，但这给了我以下错误：

---

有人能帮我吗

您得到一个错误，因为您正在使用

WHERE

和

MERGE

子句<代码>其中不能与

合并

一起使用

您可以修改查询以删除语法错误，如下所示：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MERGE (state_code:State_Code {code: row.st_cd})
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)

注意：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL 
MERGE (state_code:State_Code {code: row.st_cd})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.zip_cd IS NULL
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MATCH (state_code:State_Code {code: row.st_cd})
MATCH (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)

如果

st_cd

或

zip_cd

中的一个为空，则将跳过记录

不建议在一个查询中使用不止一个<代码>合并<代码>，请考虑为此编写3个单独的查询。 推荐方法：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL 
MERGE (state_code:State_Code {code: row.st_cd})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.zip_cd IS NULL
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MATCH (state_code:State_Code {code: row.st_cd})
MATCH (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)

加载状态代码：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL 
MERGE (state_code:State_Code {code: row.st_cd})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.zip_cd IS NULL
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MATCH (state_code:State_Code {code: row.st_cd})
MATCH (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)

加载邮政编码：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL 
MERGE (state_code:State_Code {code: row.st_cd})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.zip_cd IS NULL
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MATCH (state_code:State_Code {code: row.st_cd})
MATCH (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)

创建状态Zip关系：

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL 
MERGE (state_code:State_Code {code: row.st_cd})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.zip_cd IS NULL
MERGE (zip_code:Zip_Code {code: row.zip_cd, type:'location'})

USING PERIODIC COMMIT
LOAD CSV WITH HEADERS FROM "file:///DOL_data_whd_whisard_reduced.csv" AS row
WITH row
WHERE NOT row.st_cd IS NULL AND NOT row.zip_cd IS NULL
MATCH (state_code:State_Code {code: row.st_cd})
MATCH (zip_code:Zip_Code {code: row.zip_cd, type:'location'})
MERGE (zip_code)-[:located_in]->(state_code)