Re: Mimic ALIAS in Postgresql?

On 1/16/24 15:39, Ron Johnson wrote:
> 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... 😁

You need to adjust you glasses if that's what you see me as.