正确的COPY命令从具有单引号数据的csv文件加载postgreSQL数据？ [英] The correct COPY command to load postgreSQL data from csv file that has single-quoted data?

问题描述

我有一个csv文件，其内容如下：

I have csv file that has contents like this:

10,53073,0,0,'Y','2008-05-30 21:46:55',0,'2008-05-30 21:48:04',0,53071,2

我想将csv数据加载到my_table中。

I want to load the csv data into my_table.

CREATE TABLE my_table
(
  ad_tree_id numeric(10,0) NOT NULL,
  node_id numeric(10,0) NOT NULL,
  ad_client_id numeric(10,0) NOT NULL,
  ad_org_id numeric(10,0) NOT NULL,
  isactive character(1) NOT NULL DEFAULT 'Y'::bpchar,
  created timestamp without time zone NOT NULL DEFAULT now(),
  createdby numeric(10,0) NOT NULL,
  updated timestamp without time zone NOT NULL DEFAULT now(),
  updatedby numeric(10,0) NOT NULL,
  parent_id numeric(10,0),
  seqno numeric(10,0),
  CONSTRAINT ad_treenodemm_pkey PRIMARY KEY (ad_tree_id , node_id ),
  CONSTRAINT adtree_adtreenodemm FOREIGN KEY (ad_tree_id)
      REFERENCES ad_tree (ad_tree_id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
  CONSTRAINT ad_treenodemm_isactive_check CHECK (isactive = ANY (ARRAY['Y'::bpchar, 'N'::bpchar]))
)

当我运行此命令时在pgAdmin III工具中：

When I run this command in pgAdmin III tool:

COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV;

我遇到了错误：

ERROR:  value too long for type character(1)
CONTEXT:  COPY my_table, line 1, column isactive: "'Y'"

然后我像这样修改命令：

Then I modified the command like this:

COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE ''';
COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE '\'';
COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE '\'' ESCAPE '\';
COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE '\'' ESCAPE \;

尝试时全部失败。

所以，任何人都可以在这种情况下向我显示正确的COPY命令？

So, anyone can show me the correct COPY command for this case?

推荐答案

双引号（如果 standard_conforming_strings 处于打开状态，请参见文档）

Double single quotes (if standard_conforming_strings is on, see the docs)

COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE '''';

或使用非标准的PostgreSQL特定转义字符串：

or use the non-standard PostgreSQL-specific escape string:

COPY my_table FROM 'c:\downloads\file.csv' DELIMITERS ',' CSV QUOTE E'\'';

这篇关于正确的COPY命令从具有单引号数据的csv文件加载postgreSQL数据？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！