PG COPY错误:导入带有任何整数的引用CSV文件时,"整数输入语法无效"

Question

COPY在一个简单的示例数据库中尝试通过Postgres 9.5.1中的SQL 使用命令时...

我收到此错误:

ERROR:  invalid input syntax for integer: "Sally"
CONTEXT:  COPY customer_, line 2, column id_: "Sally"

********** Error **********

ERROR: invalid input syntax for integer: "Sally"
SQL state: 22P02
Context: COPY customer_, line 2, column id_: "Sally"

...以CSV格式导入此数据时(逗号分隔值):

"first_name_","last_name_","phone_","email_"
"Sally","Jones","425.555.1324","s.jones@acme.com"
"Jarrod","Barkley","206.555.3454","j.barkley@example.com"
"Wendy","Melvin","415.555.2343","wendy@wendyandlisa.com"
"Lisa","Coleman","425.555.7282","lisa@wendyandlisa.com"
"Jesse","Johnson","507.555.7865","j.j@guitar.com"
"Jean-Luc","Martin","212.555.2244","jean-luc.martin@example.com"

...通过pgAdmin中执行的以下SQL导入:

COPY customer_
FROM '/home/parallels/Downloads/customer_.csv'
CSV 
HEADER
;

...进入此表:

-- Table: public.customer_

-- DROP TABLE public.customer_;

CREATE TABLE public.customer_
(
  id_ integer NOT NULL DEFAULT nextval('customer__id__seq'::regclass),
  first_name_ text NOT NULL,
  last_name_ text NOT NULL,
  phone_ text NOT NULL DEFAULT ''::text,
  email_ text NOT NULL DEFAULT ''::text,
  CONSTRAINT pkey_customer_ PRIMARY KEY (id_)
)
WITH (
  OIDS=FALSE
);
ALTER TABLE public.customer_
  OWNER TO postgres;
COMMENT ON TABLE public.customer_
  IS 'Represents a person  whose pets visit our clinic.';

因此,似乎包含列名称的第一行正在成功处理.失败点是CSV的第一个数据行中的第一个数据值.我导入的所有数据都不是整数类型,所以我对错误信息感到困惑.唯一的整数是id_主键,自动递增SERIAL.

我确实阅读了关于PG COPY错误的问题页面:整数的输入语法无效.但是这个问题确实涉及整数值,并且缺少空引用字符串被解释为NULL.就我而言,我们在数据中没有整数值; 唯一的整数是SERIAL具有DEFAULT生成值的主键列(不在要导入的数据中).

我还发现了问题,PostgreSQL错误:整数的输入语法无效.但似乎无关紧要.

Answer 1

尝试指定列...没有主键:

COPY customer_ (first_name_ text, last_name_ text, phone_ text, email_ text)
FROM '/home/parallels/Downloads/customer_.csv'
CSV 
HEADER
;

没有列列表,它正在寻找一个值id_.

导入数据文件的第一行列名不用于映射到表列.HEADER标志只是告诉Postgres跳过第一行,如下所述:

HEADER

指定...在输入时,忽略第一行....