Question

I have this structure in my MySQL database:

   +--------------+    +--------------+
   |    table_1   |    |    table_2   | 
   +----+---------+    +----+---------+  
   | id |   name  |    | id | surname |  
   +----+---------+    +----+---------+  
   | 1  | tbl1_1  |    | 1  | tbl2_1  |  
   | 2  | tbl1_2  |    | 2  | tbl2_2  |   
   | 3  | tbl1_3  |    | 3  | tbl2_3  |  
   +----+---------+    +----+---------+   

I need a query that returns this:

   +----+---------+---------+
   | id |   name  | surname |
   +----+---------+---------+
   | 2  | tbl1_2  | tbl2_2  |
   +----+---------+---------+

I searched in google, what I found is UNION which does this:

   +----+---------+
   | id |  name   |
   +----+---------+
   | 2  | tbl1_2  | 
   | 2  | tbl2_3  |
   +----+---------+  

which is not what I look for. I need they are combined next to each other, not on top of each other.

Answer 1

you need to use an JOIN, the type of join based on your requirement.

SELECT id,name,surname FROM table_1 INNER JOIN table_2 on table_2.id=table_1.id WHERE table_1.id = 2

The INNER JOIN will select all rows from both tables as long as there is a match between the id columns we are matching on i.e the ids exist in both the tables