目录

一、问题

二、定位问题

三、删除主键约束

四、增加主键约束

五、检查datax自定义json配置

六、总结

一、问题

使用datax从hive推送数据到pg时报错

 ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification  Call getNextException to see other errors in the batch.

二、定位问题

从报错内容很明显能看出来是主键约束出了问题，检查一下我们的主键设置

三、删除主键约束

ALTER TABLE public.table_name  DROP CONSTRAINT table_name_pkey;

四、增加主键约束

ALTER TABLE public.table_name  add primary key (id,col1);

五、检查datax自定义json配置

{"job": {"setting": {"speed": {"channel": 1},        "errorLimit": {            "record": 0,            "percentage": 0.02            }},"content": [{"reader": {                    "name": "hdfsreader",                    "parameter": {                        "path": "/user/hive/warehouse/db_name.db/table_name",                        "defaultFS": "hdfs://ip:host",                        "column": [   {    "index": 0,    "type": "string"   },   {    "index": 1,    "type": "string"   },   {    "index": 2,    "type": "string"   }                        ],                        "fileType": "orc",                        "encoding": "UTF-8",                        "fieldDelimiter": "\t"                    }                },"writer": {                    "name": "postgresqlwriter",                    "parameter": {                        "print": true,                        "encoding": "UTF-8",                        "username": "u",                        "password": "p",                        "column": [                        "id","col1",                        "col2"                    ],                    "connection": [                        {"jdbcUrl": "jdbc:postgresql://ip:host/db_name","table": ["public.table_name"]                        }                    ],                    "writeMode": "update (id,col1)"}                }            }        ]    }}

ps:我本次的报错原因是datax的主键约束跟pg表结构主键约束不一致导致的555

六、总结

1.检查目标表主键约束

2.检查datax json主键约束

来源地址：https://blog.csdn.net/chimchim66/article/details/129202268