当前位置：网站首页>SQL database field to append to main table

SQL database field to append to main table

2022-08-10 04:59:00 【CSDN Q&A】

Ask about SQL
I have three tables, as follows
form_content1
form_content2
form_content3
The above three tables have UID values
but before the UID of the main table form_contentThere is no this field, so there is no value
Now how do I append the UID values of these three tables to the main table, I have done it before, and now I completely forget
The index field is all ID
Databaseis MySQL 5.6.50

原网站

版权声明
本文为[CSDN Q&A]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/222/202208031353084629.html