Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Hacker News 50 @hn50@social.lansky.name

1/15/2026, 2:55:07 AM

Public

Generate QR Codes with Pure SQL in PostgreSQL

Link: https://tanelpoder.com/posts/generate-qr-code-with-pure-sql-in-postgres/
Discussion: https://news.ycombinator.com/item?id=46566974

pqr.sql: Generate QR Codes with Pure SQL in PostgreSQL - Tanel Poder Blog

As my cat woke me up way too early for a Saturday morning, I decided to put all this extra time (and my ChatGPT Pro subscription) into good use and generated a QR-code generator for PostgreSQL, written as a single pure SQL statement. No external libraries or Postgres extension installation needed! The pqr.sql example usage is simple: $ psql -qf pqr.sql -v payload='Hello, World!' There’s also a bit more complex version pqrsafe. - Linux, Oracle, SQL performance tuning and troubleshooting training & writing.

tanelpoder.com

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