Database-independent SQL String Concatenation in Rails

Question

I want to do a database-side string concatenation in a Rails query, and do it in database-independent way.

SQL-92 specifies double-bar (||) as the conca

Answer 1

If you want something Rails neutral, you're going to need to return the values you want concatenated and do that once the data has been delivered to rails (or do it in rails before you give it to the database).

It looks like Mysql uses CONCAT(), Postgres ||, Oracle CONCAT() or ||, T-SQL +.

Any rails abstraction of the same would have to take place at a point where you could just be doing concatenation using regular Ruby, or I've completely misunderstood the question.