MySQL 5.7.26不接受\ N表示使用Load Data Infile可为空的int列

Question

当我确定过去出于相同的目的使用过\ N值时，MySQL不接受\ N值。

步骤：

CREATE TABLE t (i INT NULL, name varchar(50));

创建一个名为test.txt的文件，并用制表符分隔字段：

1   John
\N  Jim

在MySQL中：

LOAD DATA INFILE '/var/lib/mysql-files/test.txt'
INTO TABLE t
Fields terminated BY "\t"
Escaped by ''
Lines terminated BY "\r\n";

错误：

ERROR 1366 (HY000): Incorrect integer value: '\N' for column 'i' at row 2

Answer 1

我应该这样做：

LOAD DATA infile '/var/lib/mysql-files/test.txt'
INTO TABLE t
fields terminated BY "\t"
Escaped by '\\'
lines terminated BY "\r\n";