Link - ID , Copy ID , Topic ID , Topic
Topic - Topic ID , Topic Name
I want it so that if i write topic iD in link , i will get the corresponding name of topic
So i tried this
https://ibb.co/YyrhDYq
And the error is No unique index , but hey I'm using the PK of Topic and FK of Link so why ?
Thank you for any help and check the image out for my situation