Question

I have currently 2 tables in my database with the same columns.
The data inside is different, but I need to combine them into 1 table with a query.

I tried with joins but somehow I get that it overwrites the other one.

Answer 1

You don’t want to do a join… you want to do a UNION

Let’s say you created your first table like this:

CREATE TABLE customer  
(First_Name char(50),
Last_Name char(50),
Address char(50));

And your second table (with the same fields) like this:

CREATE TABLE customer2
(First_Name char(50),
Last_Name char(50),
Address char(50));

You want a UNION statement like this:

SELECT * from customer
UNION
SELECT * from customer2;

Of course, you could select specific fields rather than SELECT * if you just wanted that.