python - How to write such a mysql statement for GROUP BY in django?

I am a newbie in django (also a scumbag in mysql). I searched on Baidu and tried to write a mysql syntax. I wa...

From [MySQLdiscussion group] 2017-06-07 09:24:57 0  2  829

java - How to solve the problem of mixed collation of mysql;

I use Spring JPA to operate the database mysql. When I first created the database, I set default-character-set...

From [MySQLdiscussion group] 2017-06-06 09:52:28 0  1  860

How to compare mysql time type fields (accurate to hours, minutes and seconds)?

I need to filter data based on the create_time field. The current sql statement is as follows: {code...} Howev...

From [MySQLdiscussion group] 2017-06-06 09:52:27 0  2  949

MySQL is installed on Alibaba Cloud ECS but cannot be accessed from the external network

Mysql is installed on Alibaba Cloud ECS but cannot be accessed from the external network. Steps: Use yum to in...

From [MySQLdiscussion group] 2017-06-06 09:52:26 0  6  1352

mysql - Should I use left join or not in in the following statement?

Implementation: Query records in a that are not related to b {code...} {code...} Which one is better, or if th...

From [MySQLdiscussion group] 2017-06-06 09:52:24 0  2  1097

mysql - Jdbc linked database

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

From [MySQLdiscussion group] 2017-06-06 09:52:22 0  1  909

How to optimize query reduction?

Just wanted to ask! The red dots above request the back-end to directly query the database conditions and retu...

From [MySQLdiscussion group] 2017-06-06 09:52:20 0  1  847

How to operate mysql's JSON?

Mysql's JSON field content "[{"id":"1","name":"a"},{"id"...

From [MySQLdiscussion group] 2017-06-06 09:52:19 0  3  749

mysql - There is a many-to-many relationship between one table and multiple tables. How to design it?

Recently, I encountered a problem of associating one table with multiple tables. For example: There is an appl...

From [MySQLdiscussion group] 2017-06-06 09:52:18 0  7  973

Can mySQL in wamp be used alone?

I used to install the integrated environment wamp when I was developing with php. Now I am developing with jsp...

From [MySQLdiscussion group] 2017-06-06 09:52:15 0  3  932

mysql storage json error

Recently, I have been using MySQL's json storage format, and a very strange problem has occurred. INSERT INTO ...

From [MySQLdiscussion group] 2017-06-06 09:52:13 0  1  950

mysql replace deadlock

Hello everyone, I have encountered a problem and would like to ask everyone for help. I now have a business ta...

From [MySQLdiscussion group] 2017-06-06 09:52:12 0  2  753

MySQL reports an error when creating a table. I can't understand it when I check the manual. Can you please solve it?

MySQL reports an error when creating a table. I can’t understand it when I check the manual. Can you please so...

From [MySQLdiscussion group] 2017-06-06 09:52:09 0  2  752

There are a lot of backslashes in the data stored in json format in Navicat for mysql. How to remove them?

When using mysql's json operation, it will be interfered by escape characters, and it is normal to read it. I ...

From [MySQLdiscussion group] 2017-06-06 09:52:07 0  3  1547

javascript - onclick event click not working

1 I don’t know why the onclick event doesn’t work. . . html<div id="leftSide_xia" style="...

From [MySQLdiscussion group] 2017-06-06 09:52:06 0  5  1100