Matching records from two tables

Question

I have two Tables: ads_info and ads.

I want to match records from two tables.

SQL Schema for ads:

| id |                 title |
|----|----------         


        

Answer 1

Do you want a simple join?

select a.*, ai.tag,
       (tag like concat('%', ads.title, '%')) as flag
from ads a join
     ads_info ai
     on ai.id = a.id;

The flag is, of course, false. It is rather hard to see situations where it would evaluate to true as you have expressed the logic.