Question

I’m still pretty new to doing this, so I’m not entirely sure it’s possible.

I have two databases and I’d like to run one query pulling from both- locating where

database1.table1.firstname + database1.table1.lastname = database2.table2.name

Is this possible?

I thought I could do something like

SELECT
    COALESCE(firstname + ' ' + lastname, firstname, lastname) Name 
FROM database1.table1
INNER JOIN database1.table1, database2.table2
WHERE
    Name = table2.name;

Is this possible? Or can joins only be performed on tables in the same databases?

Answer 1

Any MySQL query can only be run on the same database, you must perform both queries from separate connections, then merge the data.