MySQL deduplication, why can only a few hundred or dozens of duplicate data be removed each time, when there are obviously hundreds of thousands of duplicate data?

Requirement: Delete the items with the same primaryid and drugname in DRUG, and keep the smallest row of drug_...

From [MySQLdiscussion group] 2022-09-05 14:49:26 0  0  821

php - yii2-ueditor-widget

yii2-ueditor-widget When using a text editor, the ActiveForm form validation error in Yii will not prompt an e...

From [MySQLdiscussion group] 2017-06-24 09:41:35 0  1  821

【mysql】this is incompatible with sql_mode=only_full_group_by

This is a group by error of mysql5.7. How to solve it in a Mac environment? There are a lot of Baidu, but it s...

From [MySQLdiscussion group] 2017-05-24 11:33:12 0  1  821

数据库设计 - web项目，mysql数据库只会增删改查，应该怎样提高？有没有书籍推荐？

感觉就会将数据通过php来进行增删改查，不知道在一个web项目中具体怎样来设计数据库，根据网站的功能，应该设计多少个表这样的。比如我要实现对于一篇文章添加标签这样的功能（像本站这样的），应该怎样设计数据...

From [MySQLdiscussion group] 2017-04-17 11:55:28 0  2  821

mysql - navicat 经常打开表一直在载入中 也不能关闭 着急解决

navicat 经常打开表一直在载入中 也不能关闭 着急解决

From [MySQLdiscussion group] 2017-04-17 16:44:09 0  2  819

mysql中 select * from xxx where xxx.ttt like '%~%' 是什么意思

From [MySQLdiscussion group] 2017-04-17 11:03:10 0  3  819

mysql如何查询累加金额等于某个值的所有数据？

1，账单表结构 {代码...} 2,需求是按日期排序，查询总金额<=1000元的账单列表数据

From [MySQLdiscussion group] 2017-04-17 16:02:34 0  3  818

mysql - 凌晨,数据尽毁 | .ibd' already exists though the corresponding table

没时间整理格式了. 小编给看看吧. 凌晨, 磁盘突然一段异响后, 重启 mysql , 所有数据库无法打开, 有时,有的库里只剩原来 10% 的表了, phpmyadmin 各种报错 ... 查了下系统日志, 看到这些,...

From [MySQLdiscussion group] 2017-04-17 11:55:34 0  1  818

javascript - Can people who visit your website easily see your entry file if they don't have a backend password?

Like this, if I put the database password in the entry file, is this safe? If it is not safe, then how can we ...

From [MySQLdiscussion group] 2017-06-22 11:54:35 0  5  815

mysql - How to implement a DAO in JAVA to query the result sets of two entity classes at the same time

How to implement a DAO in JAVA to query the result sets of two entity classes at the same time 1. The picture ...

From [MySQLdiscussion group] 2017-05-18 10:45:21 0  1  815

mysql "the right syntax to use near 'not null comment '身份'"

{代码...} 报错信息： [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MyS...

From [MySQLdiscussion group] 2017-04-17 13:03:21 0  1  815

请问 Table 'mysql.innodb_table_stats' doesn't exist 如何解决

执行代码： /usr/bin/mysqlinstalldb --user=mysql 查看mysql_error.log发现有错误： {代码...} 网上搜好像是说“没编译innodb吧”，但是没有提供具体解决方法，请问...

From [MySQLdiscussion group] 2017-04-17 11:15:00 0  0  815

python - flask-sqlalchemy How to set fields in json format

flask-sqlalchemy How to set fields in json format

From [MySQLdiscussion group] 2017-05-18 10:47:02 0  1  814

mysql 5.5 BIGINT UNSIGNED value is out of range？mysql 5.6有这个问题吗？

百度之后说： mysql处理两个整数（INT）相减的时候，如果其中有一个是UNSIGNED INT类型的，那么结果就被当做是UNSIGNED的。

From [MySQLdiscussion group] 2017-04-17 15:29:20 0  1  814

Question about updating data in MySQL [update] cannot be successful

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technic...

From [MySQLdiscussion group] 2017-06-26 10:49:26 0  3  813