Re: Mimic ALIAS in Postgresql?

On 1/16/24 09:20, Ron Johnson wrote:
> Some RDBMSs have CREATE ALIAS, which allows you to refer to a table by a 
> different name (while also referring to it by the original name).
> 
> We have an application running on DB2/UDB which (for reasons wholly 
> unknown to me, and probably also to the current developer) extensively 
> uses this with two schemas: MTUSER and MTQRY.  For example, sometimes 
> refer to MTUSER.sometable and other times refer to it as MYQRY.sometable.

Just to be clear the table name <sometable> is the same in each schema, 
correct?

In other words setting search_path would only help if was set per 
session depending on which schema.<sometable> you wanted to access.

> 
> My goal is to present a way to migrate from UDB to PG with as few 
> application changes as possible.  Thus, the need to mimic aliases.
> 
> Maybe updatable views?
> CREATE VIEW mtqry.sometable AS SELECT * FROM mtuser.sometable;
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com