Mysql 查询成 CSV 和一个字段拆分

Question

我有这个代码，但它有问题：

SELECT email, realname INTO OUTFILE "c:/mydata.csv"
SUBSTRING_INDEX(SUBSTRING_INDEX(realname, ' ', 1), ' ', -1) as firstname,
SUBSTRING_INDEX(SUBSTRING_INDEX(realname, ' ', 2), ' ', -1) as lastname,
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY "\n"
FROM mytable;

我只选择电子邮件和实名字段，遇到空格时将实名拆分为2个字段！

错误：

 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SUBSTRING_INDEX(SUBSTRING_INDEX(realname, ' ', 1), ' ', -1) as firstname, SUBST' at line 2

Answer 1

INTO OUTFILE 必须在末尾。

SELECT email, realname 
SUBSTRING_INDEX(SUBSTRING_INDEX(realname, ' ', 1), ' ', -1) as firstname,
SUBSTRING_INDEX(SUBSTRING_INDEX(realname, ' ', 2), ' ', -1) as lastname,
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY "\n"
FROM mytable
INTO OUTFILE "c:/mydata.csv";

See manual entry.