关于LOAD DATA LOCAL INFILE

[ihelloworld]

有这样一个文件users.txt

user001中文	e10adc3949ba59abbe56e057f20f883e	NULL
user002	e10adc3949ba59abbe56e057f20f883e	NULL
user003	e10adc3949ba59abbe56e057f20f883e	NULL
user004	e10adc3949ba59abbe56e057f20f883e	NULL
user005	e10adc3949ba59abbe56e057f20f883e	NULL
user006	e10adc3949ba59abbe56e057f20f883e	NULL
user007	e10adc3949ba59abbe56e057f20f883e	NULL
user008	e10adc3949ba59abbe56e057f20f883e	NULL
user009	e10adc3949ba59abbe56e057f20f883e	NULL
user010	e10adc3949ba59abbe56e057f20f883e	NULL
user008	e10adc3949ba59abbe56e057f20f883e	NULL
user009	e10adc3949ba59abbe56e057f20f883e	NULL
user010	e10adc3949ba59abbe56e057f20f883e	NULL

用下面的语句导入到users表中,

LOAD DATA LOCAL INFILE "D:/users.txt"
	    			INTO TABLE users 
	    			FIELDS TERMINATED BY "\t" ENCLOSED BY ""				
	    			LINES TERMINATED BY "\n" STARTING BY "" (username, password, avatar)

但是有个问题，被导入的数据,其中NULL值,被做为字符串"NULL"导了进去，
有没有办法把NULL这一列做为mysql的NULL，而不是字符串null导入？

[wwwwb]

导入后，再UPDATE 此字段为NULL不行？

[ihelloworld]

[Quote=引用 1 楼 wwwwb 的回复:]

导入后，再UPDATE 此字段为NULL不行？
[/Quote]
不行啊, 那么多列,不知道是哪个列有null值啊，update也没法写啊

[wwwwb]

文本没有NULL，1列1列替换吧

[rucypli]

更新呗


update tb set col1=xxx where col1 = 'NULL'
update tb set col2=xxx where col2 = 'NULL'
update tb set col3=xxx where col3 = 'NULL'

[ihelloworld]

[Quote=引用 4 楼 rucypli 的回复:]

更新呗


update tb set col1=xxx where col1 = 'NULL'
update tb set col2=xxx where col2 = 'NULL'
update tb set col3=xxx where col3 = 'NULL'
[/Quote]

不是啊，users.txt是程序自动生成的，内容不是己知的~~

[ihelloworld]

来人呐~~

[ACMAIN_CHM]

LOAD DATA LOCAL INFILE "D:/users.txt"
	INTO TABLE users 
	FIELDS TERMINATED BY "\t" ENCLOSED BY ""                
	LINES TERMINATED BY "\n" STARTING BY "" 
	(username, password, @x)
	set avatar=if(@x='NULL',null,@x);

[ACMAIN_CHM]

关于LOAD DATA LOCAL INFILE [ :40分]
ihelloworld (ihelloworld)
'截至2011-12-30 13:47:56 用户结帖率0.00%
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