LOAD DATA LOCAL INFILE 命令不导入任何数据

Question

我一直在尝试将 csv 文件上传到 pythonanywhere 上 mysql 数据库的 table 中，但我无法弄清楚为什么 LOAD DATA LOCAL INFILE 命令不起作用.

这是我的命令和结果：

mysql> LOAD DATA LOCAL INFILE '/twenty_year_change_data.csv' 
    -> INTO TABLE twenty_year_change_data 
    -> FIELDS TERMINATED BY ',' 
    -> ENCLOSED BY '"'
    -> LINES TERMINATED BY '\n'
    -> IGNORE 1 ROWS;
Query OK, 0 rows affected (0.01 sec)
Records: 0  Deleted: 0  Skipped: 0  Warnings: 0

我再次尝试了该命令，但取下了钻头以删除 header:

mysql> LOAD DATA LOCAL INFILE '/twenty_year_change_data.csv' 
    -> INTO TABLE twenty_year_change_data 
    -> FIELDS TERMINATED BY ',' 
    -> ENCLOSED BY '"'
    -> LINES TERMINATED BY '\n';
Query OK, 1 row affected, 2 warnings (0.01 sec)
Records: 1  Deleted: 0  Skipped: 0  Warnings: 2

查看警告：

mysql> show warnings;
+---------+------+-----------------------------------------------------+
| Level   | Code | Message                                             |
+---------+------+-----------------------------------------------------+
| Warning | 1265 | Data truncated for column 'pcode_district' at row 1 |
| Warning | 1265 | Data truncated for column 'percent_change' at row 1 |
+---------+------+-----------------------------------------------------+
2 rows in set (0.00 sec)

这是 table 的样子：

mysql> select * from twenty_year_change_data;
+----------------+------+------+----------------+
| pcode_district | 1995 | 2015 | percent_change |
+----------------+------+------+----------------+
| pcode_         | 1995 | 2015 |              0 |
+----------------+------+------+----------------+
1 row in set (0.00 sec)

查看数据格式：

mysql> describe twenty_year_change_data
    -> ;
+----------------+------------+------+-----+---------+-------+
| Field          | Type       | Null | Key | Default | Extra |
+----------------+------------+------+-----+---------+-------+
| pcode_district | varchar(6) | NO   |     | NULL    |       |
| 1995           | float      | YES  |     | NULL    |       |
| 2015           | float      | YES  |     | NULL    |       |
| percent_change | float      | YES  |     | NULL    |       |
+----------------+------------+------+-----+---------+-------+
4 rows in set (0.00 sec)

我猜这可能是下划线的问题，所以我调整了 csv 文件，使 headers 不包含它们，但它仍然在导入第一个单元格后停止。

如何解决该问题，以及在使用 mysql 时我需要注意哪些格式？

更新：这是 csv 的顶部

pcode_district,1995,2015,percent_change
AL1 1,79700,427500,436.3864492
AL1 2,78125,384250,391.84
AL1 3,66500,306500,360.9022556
AL1 4,98000,575000,486.7346939
AL1 5,72000,365250,407.2916667

Answer 1

感谢@barmar 的回答。问题是 csv 文件行以 '\r\ 而不是 '\n' 终止。

LOAD DATA LOCAL INFILE 命令不导入任何数据

LOAD DATA LOCAL INFILE command imports no data

mysql

csv

pythonanywhere