如何使用 LOAD DATA INFILE 命令来跳过某些字段。
假设我有下表:
CREATE TABLE stuff (
id INT UNSIGNED AUTO_INCREMENT NOT NULL,
name CHAR(64) NOT NULL,
junk CHAR(64) NOT NULL,
a ENUM('N','Y') NOT NULL DEFAULT 'N',
PRIMARY KEY (id)
);
还有我的文件:
,name1,junk1,
,name2,junk2,
,name3,junk3,Y
声明是否:
LOAD DATA INFILE 'myfile' INTO TABLE stuff FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n';
自动跳过自动增量并正确处理?它似乎可以正确处理所有事情,但这会产生以下警告:
Warning (Code 1366): Incorrect integer value: '' for column 'id' at row 1
Warning (Code 1265): Data truncated for column 'a' at row 1
Warning (Code 1366): Incorrect integer value: '' for column 'id' at row 2
Warning (Code 1366): Incorrect integer value: '' for column 'id' at row 3
Warning (Code 1265): Data truncated for column 'a' at row 3
Warning (Code 1366): Incorrect integer value: '' for column 'id' at row 4
删除开头的逗号无法正确输入数据。
最佳答案
您可以显式将 id 设置为 NULL,以便它使用自动增量值。
LOAD DATA INFILE 'myfile'
INTO TABLE stuff
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
SET id = NULL;
我还建议删除第一个逗号并明确列出文件中的列:
LOAD DATA INFILE 'myfile'
INTO TABLE stuff
FIELDS TERMINATED BY ','
LINES TERMINATED BY '\n'
(name,junk,a)
SET id = NULL;
关于mysql - SQL LOAD DATA INFILE 问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5248680/