DEV Community πŸ‘©β€πŸ’»πŸ‘¨β€πŸ’»

Cover image for Clone schema in PostgreSQL
Renato Suero
Renato Suero

Posted on

Clone schema in PostgreSQL

Hi everyone,

My goal is to keep the post short, so If you don't know what is schema access this link.

Schemas can be useful to clients, maybe a schema by the client or schema by "category". In my job(our business is based in soccer) we use schemas by championship and year.
A sample :
ucl_2018
ucl_2017
championship *that's the model

Ok, now we need to create a new schema ucl_2019, right?

I researched and after some time, I found a function to help me, but I needed to do changes. I didn't remember exactly what I needed to do, so I decided to share the function I've been using. Another thing this function will create everything indexes, keys, foreign keys, etc...

Ok, that is the function you need to run in your database.

After that, you only need to run

select clone_schema('source','destination')
Enter fullscreen mode Exit fullscreen mode

In my case,

select clone_schema('championship','ucl_2019');
Enter fullscreen mode Exit fullscreen mode

I hope it can be useful to you. I love PostgreSQL, so I want to write more about other features I like or I think that can be useful.
My new post will be a sequence for that, I'll show how to update the schemas, running migrations in the schemas. I wrote the post

Top comments (6)

Collapse
 
kartoffelfee profile image
JΓΆrg Thomsen

great function, thanks

I had to add quote_ident( befor the sequence and table names becaus of a bad names in my db.

25: SELECT QUOTE_IDENT(sequence_name::text) FROM ...
32: SELECT QUOTE_IDENT(table_name::text) FROM ...

Collapse
 
renatosuero profile image
Renato Suero

thanks for your info, it will help others :)

Collapse
 
miguelmendozamolina profile image
Miguel Mendoza Molina

this is amazing, saves me a lot of time, thanks for sharing this information with everyone

Collapse
 
renatosuero profile image
Renato Suero

Hi Miguel, thanks for the feedback I'm so happy to know my post as helpful to someone

Collapse
 
juanefren profile image
Juan Castillo

Which Postgresl version are you using ? I tried it on 11.5 but got Syntax errror.

Collapse
 
renatosuero profile image
Renato Suero

I've been used 10.6 can you tell me the error, maybe I can help you

🌚 Friends don't let friends browse without dark mode.

Sorry, it's true.