| From: | "Joel Jacobson" <joel(at)compiler(dot)org> |
|---|---|
| To: | "Julien Rouhaud" <rjuju123(at)gmail(dot)com> |
| Cc: | "Isaac Morland" <isaac(dot)morland(at)gmail(dot)com>, "Vik Fearing" <vik(at)postgresfriends(dot)org>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Andrew Dunstan" <andrew(at)dunslane(dot)net>, "Alvaro Herrera" <alvherre(at)alvh(dot)no-ip(dot)org>, "PostgreSQL Developers" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Idea: Avoid JOINs by using path expressions to follow FKs |
| Date: | 2021-03-31 19:49:52 |
| Message-ID: | 2bf3bf1f-287c-469d-b546-e50e831bd60c@www.fastmail.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Mar 31, 2021, at 21:32, Joel Jacobson wrote:
> SELECT DISTINCT customers.company_name
> FROM order_details->products
> JOIN order_details->orders->customers
> WHERE products.product_name = 'Chocolade';
Hm, maybe the operator shouldn't be allowed directly after FROM, but only used with a join:
SELECT DISTINCT customers.company_name
FROM order_details
JOIN order_details->orders->customers
JOIN order_details->products
WHERE products.product_name = 'Chocolade';
/Joel
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