文章作者:Tyan
博客:noahsnail.com | CSDN | 简书
1. 更新数据出错
错误信息:
Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Editor and reconnect.
解决方案:
set SQL_SAFE_UPDATES = 0;
原因: Mysql有个叫SQL_SAFE_UPDATES的变量,为了数据库更新操作的安全性,此值默认为1。
2. 导入CSV文件
导入CSV文件的命令为:
load data local infile '/Users/ltc/Downloads/test.csv'
into table `test`
fields terminated by ',' optionally enclosed by '"' escaped by '"'
lines terminated by '\n';
碰到的错误:
Error Code: 13. Can't get stat of '/Users/ltc/Downloads/test.csv' (Errcode: 13 - Permission denied)
infile
前面缺少local
,因为导入的是本地文件。
3. 清空某个table
命令为:
truncate table tablename;
上面的命令特别之处在于能清理含有自增主键的数据库表。