To join on postgresql, tables for multiple sources requires pg to pg channels and the multi context (for supporting different instances of the same system).
The support for latter is there but not sure of the pg to pg channel. This would be a nice feature to have . Best Kaustubh Sent from my iPhone > On 13 Dec 2025, at 10:33 PM, Yasser Idris <[email protected]> wrote: > > I’m pretty sure I implemented this like way back when I was at QCRI. Join > was working on Postgres . No idea how it’s no longer there > >> On Sat, Dec 13, 2025 at 10:43 AM Zoi Kaoudi <[email protected]> wrote: >> >> yes, let's wait for Juri and Mads to reply because they had a join >> implementation for the Postgres platform but not sure if it has been merged >> :) >> >> Best >> -- >> Zoi >> >>> On 2025/12/13 15:22:24 "Treykorn, Felix" wrote: >>> And to add to my last message: Joining on e.g. the Java platform works >> well, even with data from different table sources. >>> ________________________________ >>> Von: Treykorn, Felix <[email protected]> >>> Gesendet: Samstag, 13. Dezember 2025 16:19 >>> An: [email protected] <[email protected]> >>> Betreff: AW: Join with multiple sources on Jdbc >>> >>> Hi all, thanks for the plentiful replies. >>> >>> Yes, we wanted to join on the Postgres Platform. Ideally with data from >> different table sources. >>> >>> Best, Felix >>> ________________________________ >>> Von: Alexander Alten <[email protected]> >>> Gesendet: Samstag, 13. Dezember 2025 13:36 >>> An: [email protected] <[email protected]> >>> Betreff: Re: Join with multiple sources on Jdbc >>> >>> Ah, yes - that’s clarifies it. Good catch! >>> >>> —Alex >>> >>> >>> >>> -- >>> Alexander Alten >>> CTO & co-founder >>> Scalytics - We Connect the World’s Data >>> >>> Subscribe < >> https://www.linkedin.com/build-relation/newsletter-follow?entityUrn=7090206008454635520> >> to our newsletter at LinkedIn <http://linkedin.com/company/databloom-ai> >>> >>> e: [email protected] >>> ln: www.linkedin.com/in/alexanderalten/< >> http://www.linkedin.com/in/alexanderalten/>< >> http://www.linkedin.com/in/alexanderalten/< >> http://www.linkedin.com/in/alexanderalten/>> < >> https://linkedin.com/in/alexanderalten/> >>> >>> Book a meeting! <http://cal.com/alexanderalten> >>> >>> Disclaimer: Human written, please excuse typos. >>> >>>> On Dec 13, 2025, at 00:47, Kaustubh Beedkar <[email protected]> >> wrote: >>>> >>>> HI Guys, from your code, particularly >>>> >>>> joinOperator.addTargetPlatform(Postgres.platform()); >>>> >>>> You want to join ON PostreSQL. I don't think this is implemented. >>>> >>>> @Alex: supporting two tables from the database or joining them is not >> an issue but performing the join on the database is. >>>> >>>> Best, >>>> Kaustubh >>>> >>>> >>>>> On 12 Dec 2025, at 8:28 PM, Treykorn, Felix < >> [email protected]> wrote: >>>>> >>>>> joinOperator.addTargetPlatform(Postgres.platform()); >>> >>> >>> -- >>> *Scalytics Connect* >>> The foundation for secure, scalable, and transparent >>> AI. >>> www.scalytics.io<http://www.scalytics.io> <http://www.scalytics.io> >>> >>> -- Please consider the >>> environment before printing this email -- >>> >>> Disclaimer: >>> The content of this >>> message is confidential. If you have received it by mistake, please >> inform >>> us by an email reply and then delete the message. It is forbidden to >> copy, >>> forward, or in any way reveal the contents of this message to anyone. The >>> integrity and security of this email cannot be guaranteed over the >>> Internet. Therefore, the sender will not be held liable for any damage >>> caused by the message. >>> >>
