我正在从第一列的 CSV 文件中导入 MySQL 中的所有数据。所有其他列都获得 NULL 值

Question

我是在我的 Mac 本地使用 MySQL。 我有一个 CSV 文件，所有字段都用双引号括起来。 这是我的 CSV 文件的第一行的摘录：

$ head -5 companies.csv
"COMPANY_ADDRESS1","COMPANY_ADDRESS2","COMPANY_CITY","COMPANY_COUNTRY","COMPANY_FAX","COMPANY_GERMANY","COMPANY_ID","COMPANY_INDIANAPOLIS","COMPANY_NAME","COMPANY_STATE","COMPANY_TELEPHONE","COMPANY_VAT","COMPANY_ZIP"
"980 Madison Avenue","6th Floor","New York","USA","","","1393","","Lucky Fives LLC","NY","212-74-2313","","10075"
"1209 Orange Street","","Wilmington","USA","","","1394","","Global Five Holdings","DE","-","","19801"
"2020 Ponce de Leon Boulevard","PH2","Coral Gables","USA","","1015110","1395","","Lion Aero Corporation","FL","305-755-5120","","33134"
"100 NE Adams Street","","Peoria","USA","","","1396","","Caterpillar Inc.","IL","+13096755975","","61630"

这是我的导入命令：

$ mysqlimport --local --ignore-lines=1 my_db companies.csv -u root --fields-enclosed-by='\"' --lines-terminated-by='\r\n' --fields-terminated-by=','

我正在导入所有记录，没有任何内容被跳过：

companies: Records: 3063  Deleted: 0  Skipped: 0  Warnings: 104

但是，为什么我在第一列中导入了所有数据，而所有其他列都填充了 NULL？

之前创建的表包含支持要加载的数据所需的所有列。

Answer 1

我认为 mysqlimport 正在寻找一个反斜杠双引号来包围字段，但它没有找到任何字段，所以它都是一个字段。

我质疑双引号前的反斜杠字符的用途。如果这是用于 Linux bash shell，我认为不需要反斜杠来指定双引号。作为演示：

# echo foo --fields-enclosed-by='\"'
foo --fields-enclosed-by=\"

# echo foo --fields-enclosed-by='"'
foo --fields-enclosed-by="

（这只是一个猜测，我可能是错的。我之前已经错了很多次。有可能 mysqlimport 正在丢弃传递给它的反斜杠字符。问题可能是别的。但是为了测试，我会在没有反斜杠的情况下让它旋转，看看没有它会产生多大的烟球。）

演示环境：

# uname -o -r -s
Linux 3.13.0-83-generic GNU/Linux

# echo $SHELL
/bin/bash

Answer 2

测试架构：

-- drop table if exists aT;
create table aT
(   -- address thing
    COMPANY_ADDRESS1 varchar(100) not null,
    COMPANY_ADDRESS2 varchar(100) not null,
    COMPANY_CITY varchar(100) not null,
    COMPANY_COUNTRY varchar(100) not null,
    COMPANY_FAX varchar(100) not null,
    COMPANY_GERMANY varchar(100) not null,
    COMPANY_ID varchar(100) not null,
    COMPANY_INDIANAPOLIS varchar(100) not null,
    COMPANY_NAME varchar(100) not null,
    COMPANY_STATE varchar(100) not null,
    COMPANY_TELEPHONE varchar(100) not null,
    COMPANY_VAT varchar(100) not null,
    COMPANY_ZIP varchar(100) not null
);

命令以交互方式或通过程序运行：

LOAD DATA INFILE 'c:\\nate\\aT.csv' INTO TABLE aT
  FIELDS TERMINATED BY ',' ENCLOSED BY '"'
  LINES TERMINATED BY '\r\n'
  IGNORE 1 LINES;
select * from aT;

or Linux:

LOAD DATA INFILE '/home/nate/aT.csv' INTO TABLE aT
  FIELDS TERMINATED BY ',' ENCLOSED BY '"'
  LINES TERMINATED BY '\n'
  IGNORE 1 LINES;

导入数据没问题

从aT中选择*； -- 查看导入

现在用于命令行（创建上述之一的 .sql）：

truncate aT; -- run this first

mysql -u root -p so_gibberish2 < c:\nate\run_this1.sql

so_gibberish2 是数据库名称。数据进来。因为mysql客户端不受bash或其他命令行转义序列的约束。