如何将数据从一个表动态插入到另一个表？

Question

I have 2 tables, videos and video_views . I have a column in videos which must have the values from video_views ie for all the views of a particular video in video_views it must store it in to videos . This should happen dynamically whenever any update happens in video_views . I tried making stored procedures but no luck.

How should I do this?

Answer 1

If you have just update operation, use

 ON UPDATE CASCADE 

for the foreign keys so whenever there is any update in video_views, that would automatically get updated in the VIDEO table..

By the way, a good approach would be to use the foreign key of video_views table so that you don't need to update records in child table and you won't have any redundant data in the tables.