示例: DELIMITER $$CREATE FUNCTION test(countnum INT)RETURNS INT DETERMINISTICBEGINDECLARE tempnum INT DEFAULT 0; IF countnum > 2 THEN RETURN ROW_COUNT(); END IF;SET countnum = countnum+1;SELECT test(countnum) INTO tempnum;END $$DELIMITER ; SELECT test(…
注:本文来源于< mysql5.7设置简单密码报错ERROR 1819 (HY000): Your password does not satisfy the current policy requirements > [问题] 有时候,只是为了自己测试,不想密码设置得那么复杂,譬如只想设置root的密码为123456. SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456'); 但是会报错: mysql> SET PASSWOR…
mysql5.7执行sql语句报错:In aggregated query without GROUP BY, expression #1 of SELECT list contains nonaggregated column 'yunva_changke.u.user_id'; this is incompatible with sql_mode=only_full_group_by 1.方法1,需要重启mysql服务 编辑/etc/my.cnf文件,加入如下参数,重启mysql sql_m…
android studio 自定义路径安装报错"You are attempting to install the android SDK 解决方法: 出现这个提示 主要是安装 Android studio 的文件与安装SDK的文件夹“重名”问题, 导致软件把android_studio_sdk 当成了 android_studio 的子文件啥的. 所以 只需要把android_studio_sdk 改成 android_sdk 就好了.…
mysql> load data local infile '/Users/flint/learn/mysql/pet' into table bx_pet; 执行报错 ERROR 1148 (42000): The used command is not allowed with this MySQL version 解决办法: 在连接数据库的时候使用 mysql --local-infile -uroot -p 连接即可…