mysql – 为什么我的数据被截断了？警告| 1265 |列的数据被截断

我尝试在date_of_birth和date_of_death中添加NULL,但这没有帮助.为什么数据会被截断？ (特别是因为目前没有任何数据…)

另外,我根本不理解警告1261.第5行与第1-4行没有区别.

谢谢！

以下脚本：

-- create the people table
DROP TABLE IF EXISTS people;

CREATE TABLE people (
full_name varchar (50) NOT NULL,
people_ID varchar (15) NOT NULL,
date_of_birth DATE,
date_of_death DATE,
PRIMARY KEY(people_ID))
ENGINE = INNODB;

LOAD DATA LOCAL INFILE "People.csv"
INTO TABLE people
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES;  

给我这些错误：

Query OK, 5 rows affected, 10 warnings (0.00 sec)
Records: 5  Deleted: 0  Skipped: 0  Warnings: 10

mysql> show warnings;
+---------+------+----------------------------------------------------+
| Level   | Code | Message                                            |
+---------+------+----------------------------------------------------+
| Warning | 1265 | Data truncated for column 'date_of_birth' at row 1 |
| Warning | 1265 | Data truncated for column 'date_of_death' at row 1 |
| Warning | 1265 | Data truncated for column 'date_of_birth' at row 2 |
| Warning | 1265 | Data truncated for column 'date_of_death' at row 2 |
| Warning | 1265 | Data truncated for column 'date_of_birth' at row 3 |
| Warning | 1265 | Data truncated for column 'date_of_death' at row 3 |
| Warning | 1265 | Data truncated for column 'date_of_birth' at row 4 |
| Warning | 1265 | Data truncated for column 'date_of_death' at row 4 |
| Warning | 1265 | Data truncated for column 'date_of_birth' at row 5 |
| Warning | 1261 | Row 5 doesn't contain data for all columns         |
+---------+------+----------------------------------------------------+
10 rows in set (0.00 sec)

mysql> select * from people;
+-------------------+-----------+---------------+---------------+
| full_name         | people_ID | date_of_birth | date_of_death |
+-------------------+-----------+---------------+---------------+
| Harry Dunham      | H_Dunham  | 0000-00-00    | NULL          |
| Julien Bryan      | J_Bryan   | 0000-00-00    | 0000-00-00    |
| Jules V.D. Bucher | J_Bucher  | 0000-00-00    | 0000-00-00    |
| Miriam Bucher     | M_Bucher  | 0000-00-00    | 0000-00-00    |
| Paul Bowles       | P_Bowles  | 0000-00-00    | 0000-00-00    |
+-------------------+-----------+---------------+---------------+
5 rows in set (0.01 sec)

这是我的.csv：

FullName,People_ID,DOB,DOD
Jules V.D. Bucher,J_Bucher,,
Miriam Bucher,M_Bucher,,
Julien Bryan,J_Bryan,,
Paul Bowles,P_Bowles,,
Harry Dunham,H_Dunham,,

解决方法:

也许正在发生的事情是Mysql试图将空字符串“”强制进入您的日期列,但该列只接受DATE格式的数据,因此它被转换为正确的格式.尝试调整您的CSV,以便其中一行在日期列中有“0000-00-00”而不是“”(空白),并查看您是否收到更少的警告.

1261警告看起来更像是相同的 – 可能是无害的,但是在Mysql如何处理CSV导入方面令人讨厌的怪癖 – 除非你看到你的导入数据不完整的证据,否则我不会担心.

标签：mysql,date,null,warnings,truncated
来源： https://codeday.me/bug/20190725/1528034.html