<p>一个日期列的默认日期格式在MySQL中是<code>YYYY-MM-DD HH:MM:SS</code>。</p> <p>我尝试加载的数据文件中有一个日期字段，日期格式是<code>DD-MON-YY HH:MM:SS</code>。当我使用<code>LOAD DATA</code>命令加载这个文件时，数据库会混淆，并将所有日期条目设置为<code>0000-00-00 00:00:00</code>或NULL。</p> <p>这是我使用<code>STR_TO_DATE</code>选项进行的测试，但它不起作用。</p> <p><strong>测试文件（test_temp.csv）</strong></p> <pre class="brush:php;toolbar:false;">c1, c2 07-JUN-12 22:50:19, "abc" 07-JUN-13 22:50:19, "bcd"</pre> <p><strong>测试表（temp_test）</strong></p> <pre class="brush:php;toolbar:false;">describe temp_test; +-------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+-------------+------+-----+---------+-------+ | c1 | datetime | YES | | NULL | | | c2 | varchar(10) | YES | | NULL | | +-------+-------------+------+-----+---------+-------+</pre> <p><strong>数据加载命令：</strong></p> <pre class="brush:php;toolbar:false;">load data infile '/var/lib/mysql/DataSet-1/temp_test.csv' ignore into table temp_test fields terminated by ',' enclosed by '"' lines terminated by 'rn' ignore 1 lines (@var_c1,c2) set c1 = STR_TO_DATE(@var_c1,'%d-%b-%y %h:%i:%s');</pre> <p><strong>输出</strong></p> <pre class="brush:php;toolbar:false;">Query OK, 2 rows affected, 2 warnings (0.00 sec) Records: 2 Deleted: 0 Skipped: 0 Warnings: 0 MySQL&gt; show warnings; +-------+------+-------------------------------------------------------------------------+ | Level | Code | Message | +-------+------+-------------------------------------------------------------------------+ | Error | 1411 | Incorrect datetime value: '07-JUN-12 22:50:19' for function str_to_date | | Error | 1411 | Incorrect datetime value: '07-JUN-13 22:50:19' for function str_to_date | +-------+------+-------------------------------------------------------------------------+ MySQL&gt; select * from temp_test; +------+------+ | c1 | c2 | +------+------+ | NULL | abc | | NULL | bcd | +------+------+</pre> <p>问题出在：</p> <ol> <li>输入日期列（应该是<code>07-JUN-12</code>还是<code>07-Jun-12</code>）或</li> <li>我的格式字符串（<code>%d-%b-%y</code>）或</li> <li>其他原因？</li> </ol><p><br /></p>

%d-%b-%y %h:%i:%s

%d-%b-%y %H:%i:%s
         ^^

LOAD DATA INFILE '/path/to/temp_test.csv'
IGNORE INTO TABLE temp_test
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
  LINES TERMINATED BY '\r\n' -- or '\n'
  IGNORE 1 LINES
(@c1, c2)
SET c1 = STR_TO_DATE(@c1,'%d-%b-%y %H:%i:%s');

mysql> select * from temp_test;
+---------------------+------+
| c1                  | c2   |
+---------------------+------+
| 2012-06-07 22:50:19 | abc  |
| 2013-06-07 22:50:19 | bcd  |
+---------------------+------+
2 rows in set (0.00 sec)