Re: Mimic ALIAS in Postgresql?

On Tue, Jan 16, 2024 at 5:31 PM Rob Sargent <robjsargent(at)gmail(dot)com> wrote:

> On 1/16/24 10:20, 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.
>
> 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;
>
> Isn't it time to get rid of that debt? A sed -i 's/MTUSER/MTQRY/g' (or
> vice versa) ends what looks to me to be a split brain problem. All the sql
> is in git right? :)
>
> Or perhaps you have to beef the sed up to use word boundaries just in case.
>

I'm not a Java web developer... 😁